Chetumal
Mexico
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Chetumal, Mexico

Months with the highest relative humidity are January, October, November and December (80%).
The month with the lowest relative humidity is April (73%).

The wettest month (with the highest rainfall) is September (206.8mm).
The driest month (with the lowest rainfall) is March (26.4mm).

The month with the highest number of rainy days is September (15.8 days).
Months with the lowest number of rainy days are March and April (3.8 days).

The best month for swimming (with the highest average sea temperature) is September (29.7°C).
The coldest month (with the lowest average sea temperature) is January (26.2°C).

Months with the longest days are April, May, June, July and August (Average daylight: 13h).
Months with shortest days are January, November and December (Average daylight: 11h).

The month with most sunshine is April (Average sunshine: 9.1h).
The month with least sunshine is December (Average sunshine: 6.6h).

Months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
Months with the lowest UV index are January, November and December (UV index 8).

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