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

Monthly weather forecast and climate
Chetumal, Mexico

The best months for a swim in Chetumal, Mexico, are February through April, with a perfect temperature - varying between 25°C (77°F) and 29°C (84.2°F), and scarce rainfall.
January, like December, in Chetumal, Mexico, is a moderately hot winter month, with average temperature ranging between max 28.5°C (83.3°F) and min 18.3°C (64.9°F). The coldest month is January, with an average high-temperature of 28.5°C (83.3°F) and an average low-temperature of 18.3°C (64.9°F). In January, the average heat index is estimated at a hot 33.4°C (92.1°F). Weather in January »

The last month of the winter, February, is also a moderately hot month in Chetumal, Mexico, with average temperature fluctuating between 29.5°C (85.1°F) and 19.2°C (66.6°F). The ideal sea water temperature of 26.3°C (79.3°F) and only 5.8 rainfall days, with 35.9mm (1.4") of accumulated rainfall, make February the best time for swimming and other water activities. Weather in February »

The first month of the spring, March, is a tropical month in Chetumal, Mexico, with temperature in the range of an average high of 30.7°C (87.3°F) and an average low of 21.5°C (70.7°F). The ideal sea water temperature of 26.7°C (80.1°F) and only 3.8 rainfall days, with 26.4mm (1") of accumulated rainfall, make March the best time for swimming and other water activities. Weather in March »

April, like March, is another tropical spring month in Chetumal, Mexico, with average temperature ranging between min 23.7°C (74.7°F) and max 32.1°C (89.8°F). The ideal sea water temperature of 27.6°C (81.7°F) and only 3.8 rainfall days, with 36.4mm (1.4") of accumulated rainfall, make April the best time for swimming and other water activities. Weather in April »

May, the last month of the spring, in Chetumal, is another hot month, with average temperature ranging between max 32.7°C (90.9°F) and min 24.6°C (76.3°F). In May, the average high-temperature is practically the same as in April - a still tropical 32.7°C (90.9°F). Weather in May »

The first month of the summer, June, is still a hot month in Chetumal, Mexico, with average temperature ranging between min 25°C (77°F) and max 32.3°C (90.1°F). In June, the average high-temperature is almost the same as in May - a still hot 32.3°C (90.1°F). Weather in June »

July, like June, is another hot summer month in Chetumal, Mexico, with average temperature varying between 24.5°C (76.1°F) and 32.4°C (90.3°F). In Chetumal, the average high-temperature is almost the same as in June - a still tropical 32.4°C (90.3°F). Weather in July »

The last month of the summer, August, is also a hot month in Chetumal, Mexico, with temperature in the range of an average high of 32.8°C (91°F) and an average low of 24.3°C (75.7°F). August is the warmest month, with an average high-temperature of 32.8°C (91°F) and an average low-temperature of 24.3°C (75.7°F). In August, the average heat index is appraised at a burning hot 45.9°C (114.6°F). Weather in August »

September, the first month of the autumn, in Chetumal, is still a tropical month, with average temperature varying between 24°C (75.2°F) and 32.5°C (90.5°F). In Chetumal, the average high-temperature is relatively the same as in August - a still tropical 32.5°C (90.5°F). Weather in September »

October, like September, is another hot autumn month in Chetumal, Mexico, with temperature in the range of an average high of 31.5°C (88.7°F) and an average low of 22.4°C (72.3°F). In October, the average high-temperature is relatively the same as in September - a still tropical 31.5°C (88.7°F). Weather in October »

The last month of the autumn, November, is another hot month in Chetumal, Mexico, with temperature in the range of an average high of 30°C (86°F) and an average low of 20.4°C (68.7°F). In Chetumal, the average high-temperature in November is almost the same as in October - a still hot 30°C (86°F). Weather in November »

The first month of the winter, December, is also a moderately hot month in Chetumal, Mexico, with average temperature ranging between min 18.9°C (66°F) and max 28.8°C (83.8°F). In December, the average high-temperature is practically the same as in November - a warm 28.8°C (83.8°F). Weather in December »

What is the coldest month in Chetumal?

With an average high-temperature of 28.5°C (83.3°F) and an average low-temperature of 18.3°C (64.9°F), January is the coldest month in Chetumal.

What is the most humid month in Chetumal?

Months with the highest humidity in Chetumal are January, October through December, with an average relative humidity of 80%.

How many days does it rain in Chetumal?

In Chetumal, during the entire year, the rain falls for 123 days and collects up to 1307.6mm (51.5") of precipitation.

What is the month with the coldest sea water in Chetumal?

With an average sea temperature of 26.2°C (79.2°F), January is the month with the coldest seawater in Chetumal, Mexico.

When is the lowest UV index in Chetumal?

January, November and December, with an average maximum UV index of 8, are months with the lowest UV index in Chetumal, Mexico.

What is the driest month in Chetumal?

The month with the least rainfall in Chetumal is March when the rain falls for 3.8 days and typically collects 26.4mm (1") of precipitation.

What are the months with the highest UV index in Chetumal?

Months with the highest UV index are March through September, with an average maximum UV index of 12.

What is the least humid month in Chetumal?

With an average relative humidity of 73%, April is the least humid month in Chetumal.

What month has the most sunshine in Chetumal?

April has the most sunshine of the year, with an average of 9.1h of sunshine.

When are the longest days in Chetumal?

The month with the longest days is June, with an average of 13.2h of daylight.

What is the warmest month in Chetumal?

The warmest month in Chetumal is August, with an average high-temperature of 32.8°C (91°F) and an average low-temperature of 24.3°C (75.7°F).

What is the wettest month in Chetumal?

September is the month with the most rainfall. Rain falls for 15.8 days and accumulates 206.8mm (8.1") of precipitation.

When is the sea warmest in Chetumal?

September is the month with the warmest seawater, with an average sea temperature of 29.7°C (85.5°F).

What is the month with the shortest days in Chetumal?

The month with the shortest days in Chetumal is December, with an average of 11h of daylight.

What is the month with the least sunshine in Chetumal?

December has the least sunshine of the year in Chetumal, with an average of 6.6h of sunshine.
Average temperature - Chetumal, Mexico
Average humidity - 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%).

Average rainfall - Chetumal, Mexico

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

Average rainfall days - Chetumal, Mexico

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).

Average sea temperature - Chetumal, Mexico

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).

Average daylight / Average sunshine - Chetumal, Mexico
Average UV index - Chetumal, Mexico

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).