Climate guide for Gili Islands, Indonesia

Best Time to Visit
Gili Islands

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About Gili Islands

January-March is the sweet spot: bike palm lanes, snorkel turtle spots, and watch Bali sunsets. Dry months keep boat days calm and water clearest.

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Travel Tips

Cidomo Quiet Hours
Beaches are loveliest at sunrise before dive boats depart. Nightlife on Gili Trawangan runs late - choose lodging by vibe.
Boat Hops & No Motors
Public fast boats and island hoppers link the three Gilis; cidomo carts and bikes replace motorbikes. Agree cidomo prices before riding.
Dive & Snorkel Costs
Fun dives and courses are the main spend; snorkel gear hire is cheap. Some turtle spots ask for small conservation donations.
Reef Footwear & Cash
Wear reef shoes on coral rubble entries. ATMs can run dry - bring enough cash for boats and small warungs.

Things to do in Gili Islands

Gili Islands, Indonesia. Live activities and tours from GetYourGuide, matched to this destination.

When to visit Gili Islands: the short answer

The best time to visit Gili Islands is July, followed by August, September. Those months combine the most usable temperatures with the fewest lost days to rain: July averages 26°C with 31 mm of rain and about 30 sunny days. The months to avoid unless you have a specific reason are March, February. If budget matters more than perfect weather, November is the strongest of the low-rate months at 6.9/10.

Across the year Gili Islands swings from 26°C in July to 28°C in October, a 2-degree spread, while rainfall ranges from 31 mm in July to 412 mm in March. That is the whole planning problem in one sentence: Gili Islands is not equally good year-round, and the difference between the best and worst month here is 3.7 points on a 10-point scale.

Warmest month: October (28°C). Coolest: July (26°C). Driest: July (31 mm). Wettest: March (412 mm).

Gili Islands month by month

January in Gili Islands — workable with trade-offs

Trade-offs · 6.2/10

January averages 27°C (80°F) with humidity around 87%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

314 mm of rain puts this in monsoon territory — about 27 sunny days across the whole month, and multi-day washouts are normal.

It scores 6.2/10 here, 9th of 12 months, against 9.8/10 in the destination's best month.

Expect mid-season pricing, and crowds are light for this destination.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

If your dates are flexible, July is materially better in Gili Islands — 3.6 points higher on the same scale.

February in Gili Islands — workable with trade-offs

Trade-offs · 6.1/10

February averages 27°C (80°F) with humidity around 89%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

349 mm of rain puts this in monsoon territory — about 25 sunny days across the whole month, and multi-day washouts are normal.

It scores 6.1/10 here, 11th of 12 months, against 9.8/10 in the destination's best month.

Expect low-season pricing, and crowds are light for this destination.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

If your dates are flexible, July is materially better in Gili Islands — 3.7 points higher on the same scale.

March in Gili Islands — workable with trade-offs

Trade-offs · 6.1/10

March averages 27°C (80°F) with humidity around 87%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

412 mm of rain puts this in monsoon territory — about 28 sunny days across the whole month, and multi-day washouts are normal.

It scores 6.1/10 here, 12th of 12 months, against 9.8/10 in the destination's best month.

Expect low-season pricing, and crowds are light for this destination.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

If your dates are flexible, July is materially better in Gili Islands — 3.7 points higher on the same scale.

April in Gili Islands — workable with trade-offs

Trade-offs · 6.4/10

April averages 27°C (81°F) with humidity around 86%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

214 mm of rain puts this in monsoon territory — about 27 sunny days across the whole month, and multi-day washouts are normal.

It scores 6.4/10 here, 8th of 12 months, against 9.8/10 in the destination's best month.

Expect low-season pricing, and crowds are light for this destination.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

If your dates are flexible, July is materially better in Gili Islands — 3.4 points higher on the same scale.

May in Gili Islands — reliably good (5th best month)

Good · 8/10

May averages 27°C (81°F) with humidity around 81%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

Rainfall runs 97 mm, so plan one flexible day in three; you still get about 31 sunny days and 11.7 hours of daylight.

It scores 8/10 here, 5th of 12 months, against 9.8/10 in the destination's best month.

Expect mid-season pricing, and crowds are moderate.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a packable rain layer.

If your dates are flexible, July is materially better in Gili Islands — 1.8 points higher on the same scale.

June in Gili Islands — the year's strongest window

Best window · 8.8/10

June averages 27°C (80°F) with humidity around 79%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

Rainfall runs 65 mm, so plan one flexible day in three; you still get about 30 sunny days and 11.6 hours of daylight.

On our climate-comfort scale this is the top-ranked month of the year for Gili Islands at 8.8/10 — the reference point every other month on this page is measured against.

Expect mid-season pricing, and crowds are moderate.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a packable rain layer.

July in Gili Islands — the year's strongest window

Best window · 9.8/10

July averages 26°C (79°F) with humidity around 75%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

Expect 31 mm of rain — occasional showers rather than washed-out days — alongside about 30 sunny days and 11.7 daylight hours.

On our climate-comfort scale this is the top-ranked month of the year for Gili Islands at 9.8/10 — the reference point every other month on this page is measured against.

Expect peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.

August in Gili Islands — the year's strongest window

Best window · 9.6/10

August averages 26°C (79°F) with humidity around 74%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

Expect 38 mm of rain — occasional showers rather than washed-out days — alongside about 31 sunny days and 11.8 daylight hours.

On our climate-comfort scale this is the top-ranked month of the year for Gili Islands at 9.6/10 — the reference point every other month on this page is measured against.

Expect peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.

September in Gili Islands — the year's strongest window

Best window · 8.9/10

September averages 27°C (80°F) with humidity around 74%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

Rainfall runs 61 mm, so plan one flexible day in three; you still get about 30 sunny days and 12.1 hours of daylight.

On our climate-comfort scale this is the top-ranked month of the year for Gili Islands at 8.9/10 — the reference point every other month on this page is measured against.

Expect mid-season pricing, and crowds are moderate.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a packable rain layer.

October in Gili Islands — reliably good (6th best month)

Good · 7.9/10

October averages 28°C (82°F) with humidity around 76%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

At 108 mm this is a genuinely wet month: about 31 sunny days in total, and outdoor plans need an indoor fallback.

It scores 7.9/10 here, 6th of 12 months, against 9.8/10 in the destination's best month.

Expect mid-season pricing, and crowds are moderate.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

If your dates are flexible, July is materially better in Gili Islands — 1.9 points higher on the same scale.

November in Gili Islands — workable with trade-offs

Trade-offs · 6.9/10

November averages 28°C (82°F) with humidity around 81%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

At 160 mm this is a genuinely wet month: about 29 sunny days in total, and outdoor plans need an indoor fallback.

It scores 6.9/10 here, 7th of 12 months, against 9.8/10 in the destination's best month.

Expect low-season pricing, and crowds are light for this destination.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

If your dates are flexible, July is materially better in Gili Islands — 2.9 points higher on the same scale.

December in Gili Islands — workable with trade-offs

Trade-offs · 6.2/10

December averages 27°C (81°F) with humidity around 85%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

368 mm of rain puts this in monsoon territory — about 24 sunny days across the whole month, and multi-day washouts are normal.

It scores 6.2/10 here, 10th of 12 months, against 9.8/10 in the destination's best month.

Expect mid-season pricing, and crowds are light for this destination.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

If your dates are flexible, July is materially better in Gili Islands — 3.6 points higher on the same scale.

Frequently asked

When is the best time to visit Gili Islands, Indonesia?
In Ideal Weather mode, the best months to visit Gili Islands are July, August, September, June. July is the single peak month with an Ideal Weather score of 9.8/10 based on temperature, rainfall, humidity, daylight and historical sunny days.
What is the weather like in Gili Islands year-round?
Gili Islands has a climate profile suited to beach and coastal travel. Average monthly temperatures range from 26°C in July to 28°C in October, with Ideal Weather scores between 6.1 and 9.8 out of 10.
Which months should I avoid in Gili Islands?
The lowest Ideal Weather-scoring months in Gili Islands are February (6.1/10), March (6.1/10), January (6.2/10). These months typically combine less comfortable temperatures, higher rainfall or fewer sunny days.
When is the rainy season in Gili Islands?
March is the wettest month in Gili Islands, averaging about 412 mm of rainfall. July is the driest, at roughly 31 mm.
Which is the sunniest month in Gili Islands?
May sees the most sun in Gili Islands, with about 31 sunny days on average - ideal for outdoor plans.
Is Gili Islands a good destination for beach and coastal travel?
Gili Islands is well suited to beach and coastal travel. Its highest Ideal Weather window (July, August, September, June) aligns with the conditions travelers usually look for in this style of trip.
How is the bestime.to score for Gili Islands calculated?
Each month receives an Ideal Weather score from 0-10 using ERA5 climate normals for Gili Islands: temperature comfort, precipitation, humidity, daylight hours, and historical sunny days - weighted for beach and coastal travel.

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