Climate guide for Cancun, Mexico

Best Time to Visit
Cancun

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

About Cancun

From January to March, Cancún enjoys calm, warm Caribbean waters and minimal rainfall—ideal for Hotel Zone beaches and Isla Mujeres day trips. Swim in the gentle morning seas, then let the cooler evening breeze guide you to downtown markets and inland cenote escapes.

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Did you know?

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Travel Tips

01Best time & timing
Target April, May, March — that is where comfort scores peak (9.6/10). December is the weakest month at 6.5/10.
02Weather & what to pack
April averages 27°C with 40 mm of rain and about 30 days with 6+ hours of sunshine. Pack the lightest clothing you own, a hat and more water than feels necessary.
03Crowds & value
If budget matters, target February — 8.5/10 with lighter demand than April.

Things to do in Cancun

Cancun, Mexico. Live activities and tours from GetYourGuide, matched to this destination.

When to visit Cancun: the short answer

Plan Cancun for April, with May, March close behind — the stretch with the most usable temperatures and the fewest lost days to rain: April averages 27°C with 40 mm of rain and about 30 days with 6+ hours of sunshine. The months to avoid unless you have a specific reason are December, November. If budget matters more than perfect weather, September is the strongest of the low-rate months at 7.8/10.

Across the year Cancun swings from 25°C in February to 29°C in July, a 4-degree spread, while rainfall ranges from 40 mm in April to 207 mm in June. In short, Cancun is not equally good year-round — the gap between its best and worst month is 3.1 points on the same 10-point scale.

Warmest month: July (29°C). Coolest: February (25°C). Driest: April (40 mm). Wettest: June (207 mm).

Cancun month by month

January in Cancun — middling scores, decent value

Trade-offs · 6.8/10

With 25°C (77°F) on average, January delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.

123 mm of rain signals a properly wet month, with only about 13 days with 6+ hours of sunshine to count on — build indoor options into the schedule.

That is 6.8/10 on the same scale — 10th of 12 months, versus 9.6/10 for the best month here.

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

Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella.

If your dates are flexible, April is materially better in Cancun — 2.8 points higher on the same scale.

February ranks 4th of 12 for Cancun — one of the best windows

Best window · 8.5/10

With 25°C (77°F) on average, February delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.

Budget for roughly 69 mm of rain this month — a flexible day or two helps — with about 19 days with 6+ hours of sunshine and 11.3 hours of daylight to work around it.

On our climate-comfort scale this is one of the strongest months of the year for Cancun at 8.5/10 (4th of 12), just behind April at 9.6/10.

Expect mid-season pricing, and crowds are moderate.

Pack light clothing, swimwear and real sun protection, a packable rain layer.

March in Cancun — one of the year's strongest windows (3rd)

Best window · 9.5/10

March averages 27°C (80°F) and humidity near 75%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

Expect 44 mm of rain — occasional showers rather than washed-out days — alongside about 28 days with 6+ hours of sunshine and 11.9 daylight hours.

A 9.5/10 puts this among the year's best months in Cancun (3rd of 12); only April scores higher, at 9.6/10.

Plan for peak pricing, with 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.

April: the best month of the year in Cancun

Best window · 9.6/10

Days in April average 27°C (81°F) and humidity near 73% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

With around 40 mm of rain, any showers tend to pass through rather than settle in; about 30 days with 6+ hours of sunshine and 12.5 hours of daylight fill the rest.

On our climate-comfort scale this is the top-ranked month of the year for Cancun 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.

May in Cancun — one of the year's strongest windows (2nd)

Best window · 9.6/10

May averages 29°C (84°F) and humidity near 73%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

Expect 42 mm of rain — occasional showers rather than washed-out days — alongside about 31 days with 6+ hours of sunshine and 13 daylight hours.

A 9.6/10 puts this among the year's best months in Cancun (2nd of 12); only April scores higher, at 9.6/10.

Figure on peak pricing, with crowds are moderate. 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.

June in Cancun — reliably good (8th best month)

Good · 7.5/10

Days in June average 29°C (83°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 207 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 7.5/10 on the same scale — 8th of 12 months, versus 9.6/10 for the best month here.

Budget for 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, April is materially better in Cancun — 2.1 points higher on the same scale.

July in Cancun: strong conditions, 5th of 12

Good · 7.9/10

Days in July average 29°C (84°F) and humidity near 83% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

135 mm of rain makes this a wet month here, though with about 31 days with 6+ hours of sunshine there is still bright weather between the fronts.

That is 7.9/10 on the same scale — 5th of 12 months, versus 9.6/10 for the best month here.

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, April is materially better in Cancun — 1.7 points higher on the same scale.

August in Cancun: strong conditions, 6th of 12

Good · 7.9/10

August averages 29°C (84°F) and humidity near 83%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

Monthly rainfall reaches 138 mm — wet for this destination — but about 31 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.

It scores 7.9/10 here, 6th of 12 months, against 9.6/10 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.

Flexible dates? April scores 1.7 points higher here — enough to change the trip.

September in Cancun: strong conditions, 7th of 12

Good · 7.8/10

September averages 28°C (83°F) and humidity near 85%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

Monthly rainfall reaches 135 mm — wet for this destination — but about 25 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.

It scores 7.8/10 here, 7th of 12 months, against 9.6/10 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? April scores 1.8 points higher here — enough to change the trip.

October holds up well in Cancun — 9th best month

Good · 7.2/10

Days in October 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.

177 mm of rain makes this a wet month here, though with about 20 days with 6+ hours of sunshine there is still bright weather between the fronts.

That is 7.2/10 on the same scale — 9th of 12 months, versus 9.6/10 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, April is materially better in Cancun — 2.4 points higher on the same scale.

November in Cancun — middling scores, decent value

Trade-offs · 6.6/10

Days in November average 27°C (80°F) and humidity near 83% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

145 mm of rain signals a properly wet month, with only about 14 days with 6+ hours of sunshine to count on — build indoor options into the schedule.

That is 6.6/10 on the same scale — 11th of 12 months, versus 9.6/10 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, April is materially better in Cancun — 3 points higher on the same scale.

December in Cancun — workable with trade-offs

Trade-offs · 6.5/10

December averages 25°C (77°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.

At 109 mm this is a genuinely wet month: about 10 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.

It scores 6.5/10 here, 12th of 12 months, against 9.6/10 in the destination's best month.

Figure on low-season pricing, with crowds are light for this destination.

Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella.

Flexible dates? April scores 3.1 points higher here — enough to change the trip.

FAQ

Frequently asked

When is the best time to visit Cancun, Mexico?
In Ideal Weather mode, the best months to visit Cancun are April, May, March. April is the single peak month with an Ideal Weather score of 9.6/10 based on temperature, rainfall, humidity, daylight and days with 6+ hours of sunshine.
What is the weather like in Cancun year-round?
Cancun has a climate profile suited to beach and coastal travel. Average monthly temperatures range from 25°C in February to 29°C in July, with Ideal Weather scores between 6.5 and 9.6 out of 10.
Which months should I avoid in Cancun?
The lowest Ideal Weather-scoring months in Cancun are December (6.5/10), November (6.6/10), January (6.8/10). These months typically combine less comfortable temperatures, higher rainfall or fewer days with 6+ hours of sunshine.
When is the rainy season in Cancun?
June is the wettest month in Cancun, averaging about 207 mm of rainfall. April is the driest, at roughly 40 mm.
Which is the sunniest month in Cancun?
May sees the most sun in Cancun, with about 31 days with 6+ hours of sunshine on average - ideal for outdoor plans.
Is Cancun a good destination for beach and coastal travel?
Cancun is well suited to beach and coastal travel. Its highest Ideal Weather window (April, May, March) aligns with the conditions travelers usually look for in this style of trip.
How is the bestime.to score for Cancun calculated?
Each month receives an Ideal Weather score from 0-10 using ERA5 climate normals for Cancun: temperature comfort, precipitation, humidity, daylight hours, and days with 6+ hours of sunshine - weighted for beach and coastal 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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Curated in Cancun

Tickets & experiences