January weather forecast
Chetumal, Mexico

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Weather in January

January, the same as December, is another warm winter month in Chetumal, Mexico, with an average temperature fluctuating between 27.3°C (81.1°F) and 19.8°C (67.6°F).

Temperature

In Chetumal, Mexico, the lowest average temperatures are observed in January, with a high of 27.3°C (81.1°F) and a low of 19.8°C (67.6°F).

Heat index

The heat index value for January is computed to be a hot 31°C (87.8°F). With sustained exposure and activity, exhaustion becomes probable, resulting in heat cramps.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.

Humidity

In January, the average relative humidity is 81%.

Rainfall

In Chetumal, in January, during 14.2 rainfall days, 42mm (1.65") of precipitation is typically accumulated. Throughout the year, there are 198.4 rainfall days, and 752mm (29.61") of precipitation is accumulated.

Sea temperature

The month with the coldest seawater is January, with an average sea temperature of 26.2°C (79.2°F).
Note: Swimming, diving, and similar water activities in temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as very agreeable and pleasurable for lengthy periods without discomfort.

Daylight

In January, the average length of the day is 11h and 10min.
On the first day of January, sunrise is at 7:25 am and sunset at 6:27 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 6:46 pm EST.

Sunshine

In Chetumal, Mexico, the average sunshine in January is 7.8h.

UV index

January, February, August, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Chetumal. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: In January, the maximum UV index of 6 transforms into these recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Caution! The Sun's UV intensity grows with reflections off sand and water.
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Frequently asked questions

What part of the year is the coldest in Chetumal?

Chetumal's January weather reaches an average high of 27.3°C (81.1°F) and an average low of 19.8°C (67.6°F), making it the coldest month.

What are January temperatures in Chetumal?

In Chetumal, in January, the average high-temperature is 27.3°C (81.1°F), and the average low-temperature is 19.8°C (67.6°F). In January, the average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, is computed to be 31°C (87.8°F).

What is the average humidity in January in Chetumal?

In Chetumal, the average relative humidity in January is 81%.

How much does it rain in Chetumal in January?

In Chetumal, Mexico, in January, it is raining for 14.2 days, with typically 42mm (1.65") of accumulated precipitation.

What month is the sea coldest 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 sea water temperature in January in Chetumal?

In January, the average sea temperature in Chetumal, Mexico, is 26.2°C (79.2°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.

How many hours of daylight does Chetumal have in January?

In January, the average day length in Chetumal is 11h and 10min.

What time are sunrise and sunset in January in Chetumal?

On the first day of January in Chetumal, sunrise is at 7:25 am and sunset at 6:27 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 6:46 pm EST.

How long on average sun shines in January in Chetumal?

The average sunshine duration in January in Chetumal, Mexico, is 7.8h.

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

January, February, August, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Chetumal, Mexico.

How high is the UV index in January in Chetumal?

In Chetumal, the average daily maximum UV index in January is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.

Average temperature in January
Chetumal, Mexico

Average temperature in January - Chetumal, Mexico
  • Average high temperature in January: 27.3°C

The warmest months (with the highest average high temperature) are May and August (31.8°C).
The month with the lowest average high temperature is January (27.3°C).

  • Average low temperature in January: 19.8°C

The month with the highest average low temperature is June (25.1°C).
The coldest month (with the lowest average low temperature) is January (19.8°C).

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Average pressure in January
Chetumal, Mexico

Average pressure in January - Chetumal, Mexico
  • Average pressure in January: 1016.3mbar

The month with the highest atmospheric pressure is January (1016.3mbar).
The month with the lowest atmospheric pressure is September (1011.1mbar).

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Average wind speed in January
Chetumal, Mexico

Average wind speed in January - Chetumal, Mexico
  • Average wind speed in January: 9km/h

The windiest month (with the highest average wind speed) is April (10.4km/h).
The calmest month (with the lowest average wind speed) is October (7.8km/h).

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Average humidity in January
Chetumal, Mexico

Average humidity in January - Chetumal, Mexico
  • Average humidity in January: 81%

The months with the highest relative humidity are October and December (82%).
The month with the lowest relative humidity is March (74%).

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Average rainfall in January
Chetumal, Mexico

Average rainfall in January - Chetumal, Mexico
  • Average rainfall in January: 42mm

The wettest month (with the highest rainfall) is June (124mm).
The driest month (with the least rainfall) is March (17mm).

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Average rainfall days in January
Chetumal, Mexico

Average rainfall days in January - Chetumal, Mexico
  • Average rainfall days in January: 14.2 days

The month with the highest number of rainy days is September (23.1 days).
The month with the least rainy days is April (10.1 days).

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Average sea temperature in January
Chetumal, Mexico

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).

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Average daylight in January /
Average sunshine in January
Chetumal, Mexico

Average daylight in January / Average sunshine in January - Chetumal, Mexico
  • Average daylight in January: 11h and 1min

The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 0min).

  • Average sunshine in January: 7h and 5min

The month with the most sunshine is April (Average sunshine: 8h and 54min).
The month with the least sunshine is June (Average sunshine: 7h and 36min).

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Average sunshine days in January
Chetumal, Mexico

Average sunshine days in January - Chetumal, Mexico
  • Average sunshine days in January: 13.8 days

The month with the most sunshine days is April (17.8 days).
The month with the least sunshine days is June (4.8 days).

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Average UV index in January
Chetumal, Mexico

Average UV index in January - Chetumal, Mexico
  • Average UV index in January: 6

The months with the highest UV index are March, April, May, June, July and September (UV index 7).
The months with the lowest UV index are January, February, August, October, November and December (UV index 6).

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Average cloud cover in January
Chetumal, Mexico

Average cloud cover in January - Chetumal, Mexico
  • Average cloud cover in January: 42

The month with the most cloud cover is June (Cloud cover 48).
The month with the least cloud cover is April (Cloud cover 35).

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Average visibility in January
Chetumal, Mexico

Average visibility in January - Chetumal, Mexico
  • Average visibility in January: 9km

The months with the highest visibility are March and April (10km).
The months with the lowest visibility are October and November (8km).

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Chetumal, Mexico

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