Cancún Weather
A month-by-month look at temperature, rainfall and what to pack in Cancún. The annual average is 31°C high / 23°C low — hottest in May (33°C) and coldest in January (21°C).
Cancún Weather at a Glance
As of 2026A quick summary of Cancún's year-round climate and the best time to visit.
- Annual average
- 31° / 23°
- Best time to visit
- January, February, April
- Hottest month
- May (33°C)
- Coldest month
- January (21°C)
- Wettest month
- September (200mm)
- Driest month
- March (50mm)
As of 2026, Cancún's weather averages 31°C high / 23°C low across the year, and the best time to visit for stable temperatures, rainfall and crowds is January, February, April. The hottest month is May (33°C), the coldest is January (21°C), and the wettest is September (200mm).
Best Time to Visit Cancún
January is Cancún's dry season peak — 28°C highs, 21°C lows, 7 rainy days, 78% humidity, and crystal-clear Caribbean visibility for snorkeling (Isla Mujeres MUSA underwater museum, Cozumel reef diving, Cenote Dos Ojos). The trade-off is year-peak hotel pricing (+50-80% above shoulder), especially the first week (Christmas-NYE tail). Beach conditions are at their best: minimal seaweed (sargassum is March-October phenomenon), water temperature 26°C swimmable, predictable trade winds. All-inclusive resorts run at full programming (kids clubs, beachfront DJs, evening shows). Chichén Itzá day tours operate with 95% reliability; Isla Mujeres ferries reliable. Pre-book everything 4-6 weeks ahead.
February is statistically Cancún's driest month — only 5 rainy days, 60mm rainfall, and consistent 29°C highs. Honeymoon couples + couples vacation pinnacle: Le Blanc Spa Resort, Excellence Playa Mujeres, TRS Coral Hotel all run Valentine's Day packages with sunset candlelight dinners on the beach + spa couples treatments. Whale shark season has not started yet (mid-May onwards), but Isla Mujeres + Cozumel + MUSA snorkeling at peak visibility (30m+). Chichén Itzá tours running flawlessly. Hotel pricing remains at January peaks — book 8-12 weeks ahead.
April is Cancún's last dry month before sargassum season + summer rain pattern arrives. Daytime hits 32°C (felt 35°C+), UV index 11 extreme. Sargassum (brown seaweed that washes onto beaches) is statistically minimal in April — last clean-beach month of the year. Easter week (Semana Santa) is a Mexican national holiday — domestic Mexican tourists fill resorts, hotel pricing +30-50%, restaurants busy. Post-Easter (April 15-30) is the year's best pre-summer value window: dry weather, clean beaches, normal pricing. Whale shark season opens mid-May — April is the last month to plan and book whale shark tour reservations (Isla Holbox + Isla Mujeres, 1.5-3h boat).
Cancún Weather Month by Month
Tap any month for a detailed guide with what to wear, sunrise/sunset and air quality.
| Month | High/Low | Rain | Rainy days | Crowds | |
|---|---|---|---|---|---|
| January | 28° / 21° | 100mm | 7 | Very busy | Details → |
| February | 29° / 21° | 60mm | 5 | Very busy | Details → |
| March | 30° / 22° | 50mm | 4 | Very busy | Details → |
| April | 32° / 23° | 50mm | 4 | Busy | Details → |
| May | 33° / 24° | 130mm | 8 | Moderate | Details → |
| June | 33° / 25° | 150mm | 10 | Moderate | Details → |
| July | 33° / 25° | 130mm | 9 | Busy | Details → |
| August | 33° / 25° | 140mm | 10 | Moderate | Details → |
| September | 32° / 25° | 200mm | 12 | Quiet | Details → |
| October | 31° / 23° | 200mm | 12 | Quiet | Details → |
| November | 29° / 22° | 100mm | 8 | Moderate | Details → |
| December | 28° / 21° | 100mm | 7 | Very busy | Details → |
What to Wear in Cancún by Season
Hot dry tail — lightweight T-shirt + shorts, hat, sunglasses, SPF 50+. UV index 11 still extreme. Easter week (Semana Santa) modest dress for church visits if doing Mérida day trip.
Hot + very humid summer peak — quick-dry breathable, swimwear, hat, SPF 50+. Mosquito repellent. Light rain jacket. Cooling neck towel for outdoor walks.
Hot tail + wet — quick-dry, light rain jacket, SPF 50+. Mosquito repellent. Sandals for wet beach. Hurricane prep still essential first half.
Same as January — T-shirt, shorts, swimwear. The driest month of the year. Reef-safe sunscreen mandatory.
Cancún Weather FAQ
What is the best time to visit Cancún? +
For weather, January, February, April are the most comfortable months. Highs sit around 28°C with relatively stable rainfall and crowds.
What are the hottest and coldest months in Cancún? +
The hottest month is May with an average high of 33°C, and the coldest is January with an average low of 21°C. The annual average is 31°C high / 23°C low.
When does it rain most in Cancún? +
The wettest month is September (200mm over about 12 rainy days) and the driest is March (50mm). Total annual rainfall is roughly 1410mm.
What should I pack for Cancún? +
Spring (Mar–May) averages 32/23°C — Hot dry tail — lightweight T-shirt + shorts, hat, sunglasses, SPF 50+. UV index 11 still extreme. Easter week (Semana Santa) modest dress for church visits if doing Mérida day trip. Summer (Jun–Aug) averages 33/25°C — Hot + very humid summer peak — quick-dry breathable, swimwear, hat, SPF 50+. Mosquito repellent. Light rain jacket. Cooling neck towel for outdoor walks. Autumn (Sep–Nov) averages 31/23°C — Hot tail + wet — quick-dry, light rain jacket, SPF 50+. Mosquito repellent. Sandals for wet beach. Hurricane prep still essential first half. Winter (Dec–Feb) averages 28/21°C — Same as January — T-shirt, shorts, swimwear. The driest month of the year. Reef-safe sunscreen mandatory.
What is the weather in Cancún this month (June)? +
June averages 33°C high / 25°C low with 150mm rainfall over about 10 rainy days. Crowds are moderate and prices are moderate.
Keep Planning Your Cancún Trip
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.