Mexico Cancún Weather in August — Climate Guide
August in Cancún is moderate
August is moderate for Cancún.
August is hurricane season peak start and sargassum peak month. Statistically, the historical peak hurricane strike window for Yucatán is mid-August through September. Travel insurance with full cancellation + interruption coverage absolutely essential. Hotels handle evacuations professionally if a warning is issued (3-5 day advance warning typical).
Sargassum (brown seaweed) peaks August — Tulum + Riviera Maya south of Cancún typically severely affected; Hotel Zone north Cancún better but variable. Hotels with dedicated sargassum crews (Hyatt Ziva, Le Blanc, Ritz-Carlton, Nizuc) maintain cleaner beaches than budget all-inclusives.
Travel score
Hurricane season peak start + sargassum peak + lowest pricing
August Weather at a Glance
August averages 92°F / 33°C highs and 77°F / 25°C lows with 10 rainy days and 140mm rainfall. Humidity 80%. UV 11. Sunshine 9 hours. Sea 29°C. Hurricane risk statistically peaks mid-August through September. Sargassum peak month for Yucatán beaches.
August Travel Advice
Travel insurance mandatory. Subscribe to NOAA + Mexico Conagua hurricane alerts. Identify hotel hurricane evacuation procedures on check-in. Sargassum: book hotels with dedicated cleaning crews. Lowest pricing of year makes August attractive only if you accept the risk + sargassum reality.
Flying In from Overseas
Tourist arrivals soften with hurricane awareness. European summer continues. Korean + Japanese summer break tail. Direct flights from NYC $300-450, Toronto $400-600, London $500-800. Hurricane risk = cancellation flexibility critical.
August Pricing Trends
Hurricane shoulder: Hotel Zone all-inclusive 4-star $130-240/night per couple, Playa Mujeres adult-only $400-800. Whale shark tour $130-180.
Cancún August Weather Stats
Avg High
33°C
Avg Low
25°C
Rainy Days
10
140mm total
Sunshine
9h
Daily avg
Humidity
80%
very-humid
UV Index
11
Extreme
Wind
16 km/h
Gusts 30
Sea Temp
29°C
swimming-warm
Crowds
Moderate
At attractions
August Sunrise & Sunset
Air Quality
PM2.5
22 μg/m³
PM10
42 μg/m³
Status
moderate
Feels-Like Temperature & Wind
Feels like
Daytime
38°C
Nighttime
26°C
Humidity and wind affect how the actual temperature feels.
Wind
16 km/h
Max gust 30 km/h
Activities Recommended for August
August Travel Pros & Cons
Pros
- Whale shark season continues
- Hotels -50% off January peak
- Korean summer break overlap
- Long daylight
Cons
- Hurricane season peak begins
- Sargassum peak month
- Daily heavy thunderstorms
- Travel insurance becomes critical
August Events & Festivals
- **Hurricane season peak begins (statistically mid-August onward)**
- **Sargassum peak month**
- Korean summer break tail
Cancún in August — Full Picture
August is hurricane season peak start and sargassum peak month. Statistically, the historical peak hurricane strike window for Yucatán is mid-August through September. Travel insurance with full cancellation + interruption coverage absolutely essential. Hotels handle evacuations professionally if a warning is issued (3-5 day advance warning typical).
Sargassum (brown seaweed) peaks August — Tulum + Riviera Maya south of Cancún typically severely affected; Hotel Zone north Cancún better but variable. Hotels with dedicated sargassum crews (Hyatt Ziva, Le Blanc, Ritz-Carlton, Nizuc) maintain cleaner beaches than budget all-inclusives.
Hotel pricing softens further: Hotel Zone 4-star all-inclusive $130-240 per couple. Whale shark season continuing through September.
What to Wear & What to Pack
Same as July — hot + humid + wet. Quick-dry, SPF 50+, mosquito repellent. Rain jacket essential. Hurricane preparedness: small dry bag for emergency documents + cash.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
31.7°C
23°C
5.3/mo
Summer (Jun·Jul·Aug)
Current33°C
25°C
9.7/mo
Autumn (Sep·Oct·Nov)
30.7°C
23.3°C
10.7/mo
Winter (Dec·Jan·Feb)
28.3°C
21°C
6.3/mo
Cancún Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| January (Best) | 28° | 21° | 7d·100mm | 8h | 78% | 9 | Very busy | Peak |
| February (Best) | 29° | 21° | 5d·60mm | 9h | 76% | 10 | Very busy | Peak |
| March (Best) | 30° | 22° | 4d·50mm | 9h | 75% | 11 | Very busy | Peak |
| April (Best) | 32° | 23° | 4d·50mm | 10h | 75% | 11 | Busy | Peak |
| 33° | 24° | 8d·130mm | 9h | 76% | 12 | Moderate | Shoulder | |
| 33° | 25° | 10d·150mm | 8h | 80% | 12 | Moderate | Shoulder | |
| 33° | 25° | 9d·130mm | 9h | 80% | 12 | Busy | Peak | |
| 33° | 25° | 10d·140mm | 9h | 80% | 11 | Moderate | Shoulder | |
| 32° | 25° | 12d·200mm | 7h | 81% | 10 | Quiet | Low season | |
| 31° | 23° | 12d·200mm | 7h | 80% | 9 | Quiet | Low season | |
| November (Best) | 29° | 22° | 8d·100mm | 8h | 78% | 8 | Moderate | Shoulder |
| December (Best) | 28° | 21° | 7d·100mm | 7h | 78% | 8 | Very busy | Peak |
View Other Months
Cancún August Hotel Picks
Frequently Asked Questions
Is August a good time to visit Cancún?
Cancún in August is moderate. Tourist crowds are moderate and flight/hotel prices are shoulder.
What's the average temperature in Cancún in August?
Cancún August averages a high of 33°C and a low of 25°C.
Does it rain much in Cancún in August?
Cancún August averages 140mm of rainfall over about 10 rainy days.
What should I wear in Cancún in August?
Same as July — hot + humid + wet. Quick-dry, SPF 50+, mosquito repellent. Rain jacket essential. Hurricane preparedness: small dry bag for emergency documents + cash.
What time are sunrise and sunset in Cancún in August?
Cancún August sunrise is 05:55 and sunset is 18:50, with 12h 55min of daylight.
What's the air quality like in Cancún in August?
Cancún August air quality (AQI) averages 55, rated Moderate. PM2.5 averages 22μg/m³.
What activities are recommended in Cancún in August?
In August, Cancún is great for Whale shark Isla Holbox, Cenote diving, AC museums + shopping La Isla.
Is August peak season in Cancún?
Cancún August crowds are moderate and prices are shoulder. You can travel relatively comfortably without long queues.
Best Months to Visit Cancún
View Other Months
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.