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

January weather forecast and climate
Chetumal, Mexico

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).

Temperature

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).

Heat index

In January, the average heat index is estimated at a hot 33.4°C (92.1°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'felt air temperature', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like activity, metabolic differences, differences in body mass, height, and shape, and pregnancy affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

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

Rainfall

In Chetumal, Mexico, in January, it is raining for 9.1 days, with typically 64.4mm (2.5") of accumulated precipitation. In Chetumal, during the entire year, the rain falls for 123 days and collects up to 1307.6mm (51.5") of precipitation.

Sea temperature

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

The average length of the day is 11.2h.

Sunshine

The average sunshine in January is 6.8h.

UV index

January, November and December, with an average maximum UV index of 8, are months with the lowest UV index in Chetumal, Mexico. A UV Index value of 8 to 10 symbolizes a very high threat to health from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 8 transform into the following instructions:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

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 temperature in January in Chetumal?

The average high-temperature, in January, in Chetumal, Mexico, is 28.5°C (83.3°F), while the average low-temperature is 18.3°C (64.9°F). In January, the average heat index (a.k.a. 'felt air temperature', 'feels like'), that represents influence of the relative humidity to air temperaure, is evaluated at 33.4°C (92.1°F).

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%.

What is the average humidity in January in Chetumal?

In Chetumal, the average relative humidity in January is 80%.

How much does it rain in Chetumal in January?

In January, in Chetumal, the rain falls for 9.1 days. Throughout January, 64.4mm (2.5") 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, Mexico.

What is the water temperature in January in Chetumal?

In Chetumal, Mexico, the average seawater temperature in January is 26.2°C (79.2°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Chetumal have in January?

In January, the average length of the day in Chetumal, Mexico, is 11.2h.

How long on average sun shines in January in Chetumal?

In Chetumal, the average sunshine in January is 6.8h.

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 UV index intensity in January in Chetumal?

In January, the average daily maximum UV index in Chetumal, Mexico, is 8. A UV Index reading of 8 to 10 represents a very high hazard to health from unprotected exposure to the UV radiation.
Average temperature in January - Chetumal, Mexico
  • Average high temperature in January: 28.5°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 January: 18.3°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 January - Chetumal, Mexico
  • Average humidity in January: 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 January - Chetumal, Mexico
  • Average rainfall in January: 64.4mm

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 January - Chetumal, Mexico
  • Average rainfall days in January: 9.1 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 January - Chetumal, Mexico
  • Average sea temperature in January: 26.2°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 January / Average sunshine in January - Chetumal, Mexico
  • Average daylight in January: 11.2h

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 January: 6.8h

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 January - Chetumal, Mexico
  • Average UV index in January: 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).