Climate guide for Chuuk, Micronesia

Best Time to Visit
Chuuk

How to read the score (0–10)
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01 · Micronesia

About Chuuk

Chuuk Lagoon is one of the world's best-known wreck-diving environments, but its significance extends beyond underwater tourism. Wrecks, coral reefs, steep island slopes, and living communities share the same lagoon, so responsible visits require trained divers, licensed operators, and careful respect for war graves and cultural sites. Visibility, currents, weather, boat reliability, and decompression planning matter more than a simple calendar promise. Confirm equipment and emergency support before arrival, carry adequate insurance, and leave a full buffer between diving and onward flights.

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Did you know?

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Travel Tips

01Best time & timing
Target February, January, March — that is where comfort scores peak (5.4/10). December is the weakest month at 3.4/10.
02Weather & what to pack
February averages 28°C with 100 mm of rain and about 26 days with 6+ hours of sunshine. Pack the lightest clothing you own, a hat and more water than feels necessary.
03Budget timing
If budget matters most, January is the cheapest month (4.6/10) — expect weather trade-offs.

Things to do in Chuuk

Chuuk, Micronesia. Live activities and tours from GetYourGuide, matched to this destination.

When to visit Chuuk: the short answer

Plan Chuuk for February, with January, March close behind — the stretch with the most usable temperatures and the fewest lost days to rain: February averages 28°C with 100 mm of rain and about 26 days with 6+ hours of sunshine. The months to avoid unless you have a specific reason are December, November.

Across the year Chuuk swings from 28°C in March to 28°C in December, a 1-degree spread, while rainfall ranges from 100 mm in February to 399 mm in July. In short, Chuuk is not equally good year-round — the gap between its best and worst month is 2 points on the same 10-point scale.

Warmest month: December (28°C). Coolest: March (28°C). Driest: February (100 mm). Wettest: July (399 mm).

Chuuk month by month

January in Chuuk — off-season conditions

Hardest · 4.6/10

Days in January average 28°C (82°F) and humidity near 76% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

131 mm of rain makes this a wet month here, though with about 29 days with 6+ hours of sunshine there is still bright weather between the fronts.

That is 4.6/10 on the same scale — 2nd of 12 months, versus 5.4/10 for the best month here.

Budget for 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.

February in Chuuk tops the year's climate scores

Best window · 5.4/10

Days in February average 28°C (82°F) and humidity near 76% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

Budget for roughly 100 mm of rain this month — a flexible day or two helps — with about 26 days with 6+ hours of sunshine and 11.9 hours of daylight to work around it.

On our climate-comfort scale this is the top-ranked month of the year for Chuuk at 5.4/10 — 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, a packable rain layer.

March in Chuuk — the hardest end of the year

Hardest · 4.1/10

March averages 28°C (82°F) and humidity near 79%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

Monthly rainfall reaches 180 mm — wet for this destination — but about 30 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.

It scores 4.1/10 here, 3rd of 12 months, against 5.4/10 in the destination's best month.

Plan for mid-season pricing, with 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.

April in Chuuk: expect compromises

Hardest · 3.6/10

Days in April average 28°C (82°F) and humidity near 80% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

This is the year's wettest stretch at 265 mm, but with about 27 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.

That is 3.6/10 on the same scale — 4th of 12 months, versus 5.4/10 for the best month here.

Expect low-season pricing, and crowds are light for this destination. That combination — decent conditions at the lowest rates of the year — is the best value window on this page.

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, February is materially better in Chuuk — 1.8 points higher on the same scale.

May in Chuuk — off-season conditions

Hardest · 3.5/10

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

303 mm makes this the wettest stretch of the year, though about 27 days with 6+ hours of sunshine still appear — keep an indoor fallback ready.

It scores 3.5/10 here, 8th of 12 months, against 5.4/10 in the destination's best month.

Figure on low-season pricing, with 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.

Flexible dates? February scores 1.9 points higher here — enough to change the trip.

June in Chuuk — the hardest end of the year

Hardest · 3.6/10

Days in June average 28°C (82°F) and humidity near 81% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

This is the year's wettest stretch at 340 mm, but with about 28 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.

That is 3.6/10 on the same scale — 5th of 12 months, versus 5.4/10 for the best month here.

Budget for low-season pricing, and crowds are light for this destination. That combination — decent conditions at the lowest rates of the year — is the best value window on this page.

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, February is materially better in Chuuk — 1.8 points higher on the same scale.

July in Chuuk — the hardest end of the year

Hardest · 3.6/10

Days in July average 28°C (82°F) and humidity near 81% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

This is the year's wettest stretch at 399 mm, but with about 28 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.

That is 3.6/10 on the same scale — 6th of 12 months, versus 5.4/10 for the best month here.

Expect low-season pricing, and crowds are moderate. That combination — decent conditions at the lowest rates of the year — is the best value window on this page.

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, February is materially better in Chuuk — 1.8 points higher on the same scale.

August in Chuuk — off-season conditions

Hardest · 3.6/10

August averages 28°C (82°F) and humidity near 80%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

335 mm makes this the wettest stretch of the year, though about 28 days with 6+ hours of sunshine still appear — keep an indoor fallback ready.

It scores 3.6/10 here, 7th of 12 months, against 5.4/10 in the destination's best month.

Plan for low-season pricing, with 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.

Flexible dates? February scores 1.8 points higher here — enough to change the trip.

September in Chuuk — off-season conditions

Hardest · 3.5/10

September averages 28°C (82°F) and humidity near 80%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

392 mm makes this the wettest stretch of the year, though about 22 days with 6+ hours of sunshine still appear — keep an indoor fallback ready.

It scores 3.5/10 here, 9th of 12 months, against 5.4/10 in the destination's best month.

Plan for low-season pricing, with 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.

Flexible dates? February scores 1.9 points higher here — enough to change the trip.

October in Chuuk — off-season conditions

Hardest · 3.4/10

Days in October average 28°C (82°F) and humidity near 79% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

This is the year's wettest stretch at 393 mm, but with about 26 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.

That is 3.4/10 on the same scale — 10th of 12 months, versus 5.4/10 for the best month here.

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, February is materially better in Chuuk — 2 points higher on the same scale.

November in Chuuk — the hardest end of the year

Hardest · 3.4/10

Days in November average 28°C (83°F) and humidity near 79% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

This is the year's wettest stretch at 365 mm, but with about 25 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.

That is 3.4/10 on the same scale — 11th of 12 months, versus 5.4/10 for the best month here.

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, February is materially better in Chuuk — 2 points higher on the same scale.

December in Chuuk — the hardest end of the year

Hardest · 3.4/10

December averages 28°C (83°F) and humidity near 78%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

240 mm makes this the wettest stretch of the year, though about 28 days with 6+ hours of sunshine still appear — keep an indoor fallback ready.

It scores 3.4/10 here, 12th of 12 months, against 5.4/10 in the destination's best month.

Figure on low-season pricing, with 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.

Flexible dates? February scores 2 points higher here — enough to change the trip.

FAQ

Frequently asked

When is the best time to visit Chuuk, Micronesia?
In Ideal Weather mode, the best months to visit Chuuk are February, January, March. February is the single peak month with an Ideal Weather score of 5.4/10 based on temperature, rainfall, humidity, daylight and days with 6+ hours of sunshine.
What is the weather like in Chuuk year-round?
Chuuk has a climate profile suited to sightseeing and cultural travel. Average monthly temperatures range from 28°C in March to 28°C in December, with Ideal Weather scores between 3.4 and 5.4 out of 10.
Which months should I avoid in Chuuk?
The lowest Ideal Weather-scoring months in Chuuk are October (3.4/10), November (3.4/10), December (3.4/10). These months typically combine less comfortable temperatures, higher rainfall or fewer days with 6+ hours of sunshine.
When is the rainy season in Chuuk?
July is the wettest month in Chuuk, averaging about 399 mm of rainfall. February is the driest, at roughly 100 mm.
Which is the sunniest month in Chuuk?
March sees the most sun in Chuuk, with about 30 days with 6+ hours of sunshine on average - ideal for outdoor plans.
Is Chuuk a good destination for sightseeing and cultural travel?
Chuuk is well suited to sightseeing and cultural travel. Its highest Ideal Weather window (February, January, March) aligns with the conditions travelers usually look for in this style of trip.
How is the bestime.to score for Chuuk calculated?
Each month receives an Ideal Weather score from 0-10 using ERA5 climate normals for Chuuk: temperature comfort, precipitation, humidity, daylight hours, and days with 6+ hours of sunshine - weighted for sightseeing and cultural travel.

Climate data: Open-Meteo ERA5 historical archive, the five most recent complete years (2021–2025). Scores are monthly averages for that window, not forecasts, and short-window precipitation can differ from longer-term normals. “Sunny days” count days with at least 6 hours of measured sunshine — they are not dry days.

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Explore by month

Curated in Chuuk

Tickets & experiences