If you’ve been researching the best time to visit Bali, you’ve probably seen the same advice repeated everywhere: dry season is best, rainy season is wet.

But is the wet season really that wet? And does it actually ruin your trip?

The reality is more nuanced. Some months bring cooler ocean currents and peak diving conditions. Others bring afternoon downpours, lower prices and noticeably fewer tourists. Humidity can matter more than rainfall. And where you stay on the island makes a bigger difference than most travel guides mention.

So instead of a simple dry-versus-wet answer, here’s a month-by-month breakdown to help you decide when to go to Bali based on weather, crowds and the best diving season Bali offers.

Bali Month-by-Month: Weather, Diving & Crowds at a Glance

Below is a simplified overview before we dive deeper.

Month	Weather	Sea Temp	Visibility	Crowds	Prices
Jan	Wettest month	28–29°C	15–25m	Low	Low
Feb	Wet & humid	28–29°C	15–25m	Low	Low
Mar	Transition	28°C	20–30m	Moderate	Moderate
Apr	Dry season begins	27–28°C	20–30m	Moderate	Moderate
May	Dry & sunny	27–28°C	25–35m	Moderate	Moderate
Jun	Dry & breezy	27°C	25–35m	Increasing	Higher
Jul	Dry peak	26–27°C	20–30m	High	High
Aug	Driest month	24–26°C	15–30m	Very High	High
Sep	Dry & balanced	25–27°C	20–30m	Moderate	Moderate
Oct	Transition	27°C	20–30m	Moderate	Moderate
Nov	Start of the rain	28°C	15–25m	Lower	Lower
Dec	Wet & festive	28–29°C	15–25m	Very High	High

 

Now let’s break down what that actually means.

January – Peak Rain, Warmest Water

January is typically the wettest month of the year, often averaging over 300mm of rainfall. Expect humidity, afternoon downpours and occasional multi-day rain systems.

However, it rarely rains all day every day.

Sea temperatures are warmest now, around 28–29°C. Visibility in southern Bali may drop after heavy rainfall due to runoff, but north-east Bali around Amed and Tulamben often remains diveable.

Best for:
• Lower prices
• Quieter beaches
• Macro diving
• Warm water

Amed in January

Amed and nearby Tulamben often experience noticeably less rainfall than the south due to Mount Agung’s rain shadow effect.

In practical terms, that means:

• Mornings are frequently calm and clear
• Shore diving continues uninterrupted
• Visibility often remains between 15–25 metres
• Sea conditions are typically gentle

Sites such as the USAT Liberty Wreck remain diveable year-round, and January can be excellent for macro photography, with nudibranchs, frogfish and other critters more active.

If you’re flexible with occasional afternoon showers, January can be surprisingly rewarding — especially on Bali’s north-east coast.

February – Quietest & Cheapest

February is similar to January but often slightly less intense.

If you’re looking for the cheapest time to visit Bali, this is often it. Fewer tourists mean better accommodation deals and relaxed restaurants.

Diving in Bali in February is still very possible, especially on the north-east coast. Sea conditions are generally calm in the mornings.

Best for:
• Budget travel
• Fewer crowds
• Warm, comfortable diving

What Happens in Amed in February?

Amed and nearby Tulamben continue to benefit from Mount Agung’s rain shadow, meaning rainfall is often lighter here than in southern Bali.

In February, you can typically expect:

• Warm sea temperatures around 28–29°C
• Visibility averaging 15–25 metres
• Calm morning conditions for shore dives
• Minimal impact from river runoff due to the rocky coastline

Macro life can be particularly active during this period, making it a rewarding month for underwater photographers.

For travellers prioritising value and flexibility, February remains one of the most underrated times to dive Bali’s north-east coast.

Amed in March

Amed and nearby Tulamben often see noticeable improvements by March compared to January and February.

You can typically expect:

• Gradually increasing visibility, often 20–30 metres
• Warm sea temperatures around 28°C
• More consistent sunny mornings
• Calm shore entry conditions

Because Amed sits on the north-east coast in Mount Agung’s rain shadow, improvements here often arrive slightly earlier than in southern Bali.

For divers, March can feel like the quiet return of dry season — with better clarity, fewer crowds and still very reasonable prices.

Top tip for Nyepi: Arrive at least one day before Nyepi and choose comfortable accommodation, as you’ll need to remain onsite for 24 hours during the Day of Silence.

April – Dry Season Starts

April marks the beginning of the dry season. Rainfall drops significantly, humidity eases and skies become more consistently clear.

Trails dry out, waterfalls settle and diving visibility improves across much of the island.

This is one of the best times to learn to dive. Sea conditions are stable and visibility can reach 25–30 metres in Amed and Tulamben.

Best for:
• Open Water courses
• Calm sea conditions
• Balanced pricing

Amed in April

Amed and Tulamben often feel firmly “dry season” by April.

Expect:

• Consistent sunny mornings
• Visibility regularly 25–30 metres
• Calm shore entries
• Comfortable sea temperatures around 27–28°C

April is an excellent month for beginners. Conditions are predictable, dive sites are quieter than peak season and underwater clarity is steadily improving.

May – Sweet Spot Month

Many experienced travellers consider May one of the best times to visit Bali.

Rainfall is low, humidity is manageable and crowds have not yet reached their mid-year peak. Beaches feel lively but not overcrowded.

Underwater visibility often exceeds 30 metres, especially on the north-east coast.

If you’re wondering when to go to Bali for a balance of weather, diving and pricing, May is hard to beat.

Amed in May

In Amed, May often delivers some of the most consistent diving conditions of the year.

You can expect:

• Excellent visibility, frequently 30+ metres
• Stable morning sea conditions
• Sea temperatures around 27°C
• Low rainfall and clear skies

For divers, May is widely considered one of the best diving season Bali months before peak tourism pressure builds.

June – Dry, Clear & Increasingly Busy

June offers excellent conditions across the island.

Skies are reliably clear, humidity is low and sea temperatures remain comfortable around 27°C. Visibility is typically strong at most dive sites.

Tourist numbers begin rising toward peak season, especially in southern hotspots like Seminyak and Canggu.

Best for:
• Hiking and volcano treks
• Excellent diving visibility
• Strong surf on the west coast

Amed in June

On the north-east coast, June is typically calm, sunny and clear.

In Amed you’ll usually see:

• Strong visibility, 25–35 metres
• Light coastal breezes
• Comfortable water temperatures
• Increasing but manageable visitor numbers

It’s a fantastic month for photographers and those wanting reliable diving without August-level crowds.

July – Peak Dry Season Begins

July is firmly high season.

Weather is consistently sunny and dry. However, accommodation prices rise and southern hotspots become noticeably busier due to European and Australian school holidays.

Sea temperatures begin cooling slightly in deeper southern sites, especially around Nusa Penida. Thermoclines become more noticeable.

This cooling triggers something special.

Amed in July

While southern Bali grows busy, Amed remains comparatively relaxed.

Expect:

• Excellent visibility
• Slightly cooler water than earlier months
• Stable shore diving conditions
• Comfortable dry-season weather

July is also when divers start preparing specifically for the peak of Mola Mola season in southern sites.

August – Driest Month & Peak Mola Mola

August is often the driest month of the year, with minimal rainfall and very low humidity.

Water temperatures in deeper southern dive sites may drop to 24–26°C. Thermoclines become stronger and more defined.

Crowds are at their highest. Prices peak, especially in beach and villa areas.

But August is also the height of Mola Mola season.

Mola Mola Season Bali (July–October, Peak August–September)

The highlight of the best diving season Bali offers is the arrival of the Mola Mola, also known as the ocean sunfish.

What Are Mola Mola?

Mola Mola are the heaviest bony fish on earth. They can grow over three metres tall and weigh more than 1,000 kilograms. Despite their size, they feed primarily on jellyfish.

They normally live in deep, cold water. During the dry season, cooler upwellings and thermoclines encourage them to rise toward cleaning stations where reef fish remove parasites.

When Is Mola Mola Season?

Mola Mola season Bali runs from July through October, with peak sightings in August and September.

Water temperatures during dives can drop to 22–26°C in deeper southern sites.

Where to See Them

The most reliable sightings occur around:
• Crystal Bay
• Blue Corner
• SD Point

All located near Nusa Penida and Nusa Lembongan. Mola Mola have been sighted in Amed and Tulamben, however, sightings are more rare than Nusa Penida. 

Advanced Open Water certification is recommended due to currents and depth (typically 18–30 metres).

For divers planning specifically around this event, August and September are widely considered the best time to visit Bali.

Amed in August

In Amed, conditions remain stable and clear.

You can expect:

• Excellent underwater visibility
• Slightly cooler but still comfortable water
• Calm mornings ideal for shore dives
• High season energy without southern congestion

For divers based in Amed, August offers the option of combining consistent local diving with dedicated trips south for Mola Mola sightings.

Top tip: Book your accommodation in advance as many places book out quickly, and finding last minute rooms can be tricky.

September – The Balanced Favourite

September is widely considered one of the best times to visit Bali.

Dry season conditions continue, but the intensity of August crowds begins to ease. Accommodation prices soften slightly and beaches feel more spacious.

Sea temperatures start to stabilise after the coolest thermocline period, and visibility remains strong across most dive sites.

If you want excellent weather without peak-season pressure, September is one of the strongest months of the year.

Best for:
• Dry, sunny days
• Slightly fewer crowds than August
• Strong diving visibility
• Peak Mola Mola sightings

Amed in September

In Amed, September often delivers some of the most consistent conditions of the entire year.

Expect:

• Clear skies and low humidity
• Visibility commonly 25–35 metres
• Calm, reliable shore diving
• Comfortable sea temperatures around 26–27°C

For divers who want stability combined with the option of travelling south for Mola Mola season, September is a standout month.

October – Transition Returns

October marks the gradual shift back toward rainy season, but it is often slower than many expect.

Early October frequently feels like an extension of dry season, with stable weather and good sea clarity. Rainfall increases toward the end of the month.

Crowds reduce further and accommodation pricing becomes more flexible.

Best for:
• Shoulder-season travel
• Warm sea temperatures
• Fewer tourists
• Late Mola Mola sightings

Amed in October

On the north-east coast, October often remains very diveable.

In Amed you can expect:

• Strong visibility early in the month
• Slightly warmer water returning
• Light rainfall, often in short bursts
• Quiet dive sites

October can be an excellent value month for divers seeking calm conditions without peak-season prices.

November – Start of the Rainy Season

November signals the beginning of the Bali rainy season. Rainfall increases, humidity rises and afternoon showers become more frequent.

However, this does not mean constant rain. Many mornings remain clear, with heavier showers later in the day.

Sea temperatures warm again to around 28°C, making dives particularly comfortable.

Best for:
• Lower accommodation prices
• Warmer water
• Fewer crowds
• Relaxed travel pace

Amed in November

Amed and Tulamben continue to benefit from Mount Agung’s rain shadow.

You’ll typically see:

• Calm morning sea conditions
• Visibility around 15–25 metres
• Minimal river runoff impact
• Very quiet dive sites

For divers prioritising value over perfect blue-sky days, November can be a smart choice.

December – Festive & Busy

December brings higher humidity, increased rainfall and one of the busiest travel periods of the year.

Christmas and New Year create a surge of visitors, particularly in southern Bali. Traffic increases and accommodation prices peak during the final two weeks of the month.

Rainfall is more common, but it often falls in bursts rather than continuous downpours.

Best for:
• Festive atmosphere
• Warm sea temperatures
• Lively beach clubs and events

What Happens in Amed in December?

Even during the festive season, Amed remains noticeably calmer than the south.

Expect:

• Warm water around 28–29°C
• Morning diving windows before showers
• Reduced southern-style congestion
• Relaxed village atmosphere

While visibility may fluctuate after heavy rain, shore diving often continues uninterrupted.

Dry vs Wet Season: Quick Comparison

Factor	Dry Season (Apr–Oct)	Rainy Season (Nov–Mar)
Rainfall	Low	Higher
Crowds	High mid-year	Lower
Prices	Higher	Lower
Sea Temp	Slightly cooler mid-year	Warmest
Mola Mola	Yes (Jul–Oct)	Rare
Amed Diving	Excellent	Good to Excellent

Is diving good during Bali rainy season in Amed?

Yes.

Amed and Tulamben sit in the rain shadow of Mount Agung. This means they receive significantly less rainfall than southern Bali.

Shore diving remains accessible year-round, and visibility is often more stable than in the south during heavy rain.

The Amed Advantage

One of Bali’s most consistent diving regions is Amed on the north-east coast.

Because of its geographic position:

• It receives significantly less rainfall
• Most dive sites are shore entry
• Sea conditions are often calm
• Operations are less dependent on harbour conditions

Sites like the USAT Liberty Wreck can be dived almost year-round.

For divers wanting predictability regardless of season, Amed remains one of the safest choices when deciding the best time to visit Bali.

What to Watch Out For When Planning Your Diving Trip (Amed Area)

Bali’s seasons are predictable, but nature is still nature.

There are a few short windows each year where conditions can temporarily affect diving or coastal activities.

1. Occasional North-East Swell Events

A few times a year, usually during strong wind shifts or regional weather systems, north-east swell can create surface waves along parts of Bali’s east coast. When this happens:

• Some shallow entry points may be temporarily unsuitable
• Certain dive sites may be postponed
• Boat departures may adjust timing

These periods are typically short-lived. We closely monitor regional swell models and marine forecasts, including tools such as Windy, to track wave patterns in real time and plan dives safely.

2. Heavy Rain & River Runoff

During intense rainfall, especially in January and February, rivers in southern Bali can swell and carry sediment into coastal areas.

This can reduce visibility in:
• Sandy bottom sites
• Shallow southern reefs
• Areas near river mouths

However, on the north-east coast around Amed and Tulamben, runoff impact is often minimal due to:

• Rocky volcanic shoreline
• Fewer large rivers
• Mount Agung’s rain shadow effect

We closely monitor local marine forecasts and official weather warnings from Badan Meteorologi, Klimatologi, dan Geofisika (BMKG) and adjust dive planning accordingly to ensure safety and the best possible conditions.

3. Thermoclines During Mola Mola Season

Between July and September, deeper southern dive sites can experience strong thermoclines.

This means:
• Sudden temperature drops
• Reduced visibility layers
• Stronger currents

These conditions are part of what attracts Mola Mola, but they require proper exposure protection and experience.

Top tip: Stay close to your guide, maintain good buoyancy and avoid chasing the fish if currents increase.

What We See at Bali Dive Cove Throughout the Year

Seasonal patterns are noticeable in who travels:

• January–February: Couples, Open Water students and experienced fun divers seeking quieter conditions
• March–April: Advanced Open Water courses, couples and mature travellers enjoying shoulder-season balance
• July–September: Families during school holidays, full certification courses and divers visiting for Mola Mola season
• October: A busy month with returning divers and balanced, dry conditions
• November: More experienced divers taking advantage of quieter dive sites
• December: Families returning for festive holidays and end-of-year trips

FAQs

When is Mola Mola season in Bali?

July to October, peaking in August and September.

Is August a good time to visit Bali?

Yes. Dry weather and peak Mola Mola season, but also the busiest and most expensive month.

What is the worst time to travel to Bali?

There isn’t a true worst time. January and February are wettest. July and August are busiest.

When is the cheapest time to visit Bali?

February, March and November often offer the lowest accommodation prices.

Final Thoughts

The best time to visit Bali depends on your priorities.

For sunshine and peak marine life, aim for May to September.
For Mola Mola season, choose August or September.
For lower prices and fewer crowds, consider February or November.

Understanding seasonal shifts — especially ocean behaviour — allows you to plan smarter and experience Bali at its best.

If you’re planning a broader itinerary beyond diving, explore our guide to the best things to do in Bali to help shape your trip around the season you choose.

And if diving is part of your plans, explore our Bali diving packages and time your visit around the best diving season Bali has to offer.