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 fluctuating between 28.5°C (83.3°F) and 18.3°C (64.9°F). January is the coldest month, with an average high-temperature of 28.5°C (83.3°F) and an average low-temperature of 18.3°C (64.9°F). The average heat index is calculated to a hot 33.4°C (92.1°F). Weather in January »

The last month of the winter, February, is another warm month in Chetumal, Mexico, with average temperature varying between 19.2°C (66.6°F) and 29.5°C (85.1°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 hot month in Chetumal, Mexico, with temperature in the range of an average low of 21.5°C (70.7°F) and an average high of 30.7°C (87.3°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, the same as March, in Chetumal, Mexico, is a hot spring month, with temperature in the range of an average high of 32.1°C (89.8°F) and an average low of 23.7°C (74.7°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 »

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

June, the first month of the summer, in Chetumal, is also a hot month, with temperature in the range of an average low of 25°C (77°F) and an average high of 32.3°C (90.1°F). In Chetumal, Mexico, the average high-temperature is almost the same as in May - a still tropical 32.3°C (90.1°F). Weather in June »

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

The last month of the summer, August, is another tropical month in Chetumal, Mexico, with average temperature fluctuating between 32.8°C (91°F) and 24.3°C (75.7°F). The warmest month 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). In August, the average heat index is evaluated at a blazing hot 45.9°C (114.6°F). Weather in August »

The first month of the autumn, September, is still a tropical month in Chetumal, Mexico, with average temperature varying between 32.5°C (90.5°F) and 24°C (75.2°F). In September, 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 average temperature fluctuating between 22.4°C (72.3°F) and 31.5°C (88.7°F). In October, the average high-temperature is essentially the same as in September - a still hot 31.5°C (88.7°F). Weather in October »

November, the last month of the autumn, in Chetumal, is also a hot month, with average temperature ranging between max 30°C (86°F) and min 20.4°C (68.7°F). In Chetumal, the average high-temperature in November is essentially the same as in October - a still tropical 30°C (86°F). Weather in November »

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

What is the coldest month in Chetumal?

The coldest month in Chetumal 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).

What is the most humid month in Chetumal?

January, October through December, with an average relative humidity of 80%, are most humid months in Chetumal.

How much does it rain in Chetumal?

Throughout the year, in Chetumal, Mexico, there are 123 rainfall days, and 1307.6mm (51.5") of precipitation is accumulated.

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.

What is the month with 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.

What is the driest month in Chetumal?

March is the month with the least rainfall in Chetumal. Rain falls for 3.8 days and accumulates 26.4mm (1") of precipitation.

What is the month with the highest UV index in Chetumal?

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

What is the least humid month in Chetumal?

April is the least humid month, with an average relative humidity of 73%.

What month has the most sunshine in Chetumal?

The month with the most sunshine in Chetumal, Mexico, is April, with an average of 9.1h of sunshine.

When are the longest days in Chetumal?

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

What is the warmest month in Chetumal?

The warmest month in Chetumal, Mexico, 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?

The month with the most rainfall in Chetumal, Mexico, is September when the rain falls for 15.8 days and typically aggregates up to 206.8mm (8.1") of precipitation.

What month is the sea warmest in Chetumal?

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

What is the month with the shortest days in Chetumal?

With an average of 11h of daylight, December has the shortest days of the year in Chetumal.

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).