December weather forecast and climate
Chetumal, Mexico

Temperature

The average high-temperature, is 28.8°C (83.8°F), while the average low-temperature is 18.9°C (66°F).

Humidity

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

Rainfall

In Chetumal, it is raining for 10.1 days, with typically 65.4mm (2.6") of accumulated precipitation. Throughout the year, in Chetumal, there are 123 rainfall days, and 1307.6mm (51.5") of precipitation is accumulated.

Sea temperature

In December, the average sea temperature is 26.9°C (80.4°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

December has the shortest days of the year, with an average of 11h of daylight.

Sunshine

The month with the least sunshine in Chetumal is December, with an average of 6.6h of sunshine.

UV index

Months with the lowest UV index are January, November and December, with an average UV index of 8.

What is the temperature in December in Chetumal?

The average high-temperature, in December, is 28.8°C (83.8°F), while the average low-temperature is 18.9°C (66°F).

What is the most humid month in Chetumal?

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

What is the average humidity in December in Chetumal?

The average relative humidity in December in Chetumal is 80%.

How many days does it rain in December in Chetumal?

In Chetumal, Mexico, in December, it is raining for 10.1 days, with typically 65.4mm (2.6") of accumulated precipitation.

How warm is the water in December in Chetumal?

In Chetumal, the average seawater temperature in December is 26.9°C (80.4°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

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.

How many hours of daylight does Chetumal have in December?

In Chetumal, Mexico, the average length of the day in December is 11h.

What is the month with the least sunshine in Chetumal?

With an average of 6.6h of sunshine, December has the least sunshine of the year in Chetumal.

How many hours of sunshine does Chetumal have in December?

In Chetumal, the average sunshine in December is 6.6h.

When is the lowest UV index in Chetumal?

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

What is the UV index reading in December in Chetumal?

In December, the average UV index in Chetumal is 8.
Average temperature in December - Chetumal, Mexico
  • Average high temperature in December: 28.8°C

The warmest month (with the highest average high temperature) is August (32.8°C).
The month with the lowest average high temperature is January (28.5°C).

  • Average low temperature in December: 18.9°C

The month with the highest average low temperature is June (25°C).
The coldest month (with the lowest average low temperature) is January (18.3°C).

Average humidity in December - Chetumal, Mexico
  • Average humidity in December: 80%

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 in December - Chetumal, Mexico
  • Average rainfall in December: 65.4mm

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 in December - Chetumal, Mexico
  • Average rainfall days in December: 10.1 days

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 in December - Chetumal, Mexico
  • Average sea temperature in December: 26.9°C

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 in December / Average sunshine in December - Chetumal, Mexico
  • Average daylight in December: 11h

The month with the longest days is June (Average daylight: 13.2h).
The month with shortest days is December (Average daylight: 11h).

  • Average sunshine in December: 6.6h

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

Average UV index in December - Chetumal, Mexico
  • Average UV index in December: 8

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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