Jolly Harbour
Antigua and Barbuda
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Jolly Harbour, Antigua and Barbuda

January, the same as December, is a moderately hot winter month in Jolly Harbour, Antigua and Barbuda, with average temperature ranging between max 28°C (82.4°F) and min 22°C (71.6°F).

Temperature

The coldest months are January and February, with an average high-temperature of 28°C (82.4°F).

Rainfall

In Jolly Harbour, it is raining for 16 days, with typically 67mm (2.64") of accumulated precipitation. In Jolly Harbour, during the entire year, the rain falls for 180 days and collects up to 1040mm (40.94") of precipitation.

Sea temperature

January through April, with an average sea temperature of 26°C (78.8°F), are months 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

In January, the average length of the day in Jolly Harbour, Antigua and Barbuda, is 11.2h.

Sunshine

Months with the most sunshine in Jolly Harbour are January through August, with an average of 8h of sunshine.

UV index

January and December, with an average maximum UV index of 8, are months with the lowest UV index in Jolly Harbour. A UV Index reading of 8 to 10 represents a very high threat to health from the exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 8 transform into the following instructions:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. 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 reflection of water and sand dramatically increases exposure to the UV rays.

What is the coldest month in Jolly Harbour?

January and February, with an average high-temperature of 28°C (82.4°F), are the coldest months in Jolly Harbour, Antigua and Barbuda.

What is the temperature in January in Jolly Harbour?

The average high-temperature, in January, in Jolly Harbour, Antigua and Barbuda, is 28°C (82.4°F), while the average low-temperature is 22°C (71.6°F).

How many days does it rain in January in Jolly Harbour?

In Jolly Harbour, Antigua and Barbuda, during January, the rain falls for 16 days and regularly aggregates up to 67mm (2.64") of precipitation.

What months are the sea coldest in Jolly Harbour?

January through April, with an average sea temperature of 26°C (78.8°F), are months with the coldest seawater in Jolly Harbour.

What is the sea water temperature in January in Jolly Harbour?

In Jolly Harbour, Antigua and Barbuda, in January, the average water temperature is 26°C (78.8°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 average length of the day in January in Jolly Harbour?

The average length of the day in January in Jolly Harbour, Antigua and Barbuda, is 11.2h.

What are the months with the most sunshine in Jolly Harbour?

January through August, with an average of 8h of sunshine, are months with the most sunshine in Jolly Harbour.

How long on average sun shines in January in Jolly Harbour?

In January, the average sunshine in Jolly Harbour, Antigua and Barbuda, is 8h.

When is the lowest UV index in Jolly Harbour?

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

What is the UV index reading in January in Jolly Harbour?

In Jolly Harbour, the average daily maximum UV index in January is 8. A UV Index value of 8 to 10 symbolizes a very high health risk from unsafe exposure to the Sun's UV rays.
Average temperature in January - Jolly Harbour, Antigua and Barbuda
  • Average high temperature in January: 28°C

The warmest months (with the highest average high temperature) are July, August and September (31°C).
Months with the lowest average high temperature are January and February (28°C).

  • Average low temperature in January: 22°C

Months with the highest average low temperature are June, July, August and September (25°C).
The coldest months (with the lowest average low temperature) are January, February and March (22°C).

Average rainfall in January - Jolly Harbour, Antigua and Barbuda
  • Average rainfall in January: 67mm

The wettest month (with the highest rainfall) is September (140mm).
The driest month (with the least rainfall) is February (37mm).

Average rainfall days in January - Jolly Harbour, Antigua and Barbuda
  • Average rainfall days in January: 16 days

Months with the highest number of rainy days are September, October, November and December (17 days).
The month with the least rainy days is April (11 days).

Average sea temperature in January - Jolly Harbour, Antigua and Barbuda
  • Average sea temperature in January: 26°C

The best month for swimming (with the highest average sea temperature) is September (29°C).
The coldest months (with the lowest average sea temperature) are January, February, March and April (26°C).

Average daylight in January / Average sunshine in January - Jolly Harbour, Antigua and Barbuda
  • Average daylight in January: 11.2h

The month with the longest days is June (Average daylight: 13.1h).
The month with the shortest days is December (Average daylight: 11.1h).

  • Average sunshine in January: 8h

Months with the most sunshine are January, February, March, April, May, June, July and August (Average sunshine: 8h).
Months with the least sunshine are September, October, November and December (Average sunshine: 7).

Average UV index in January - Jolly Harbour, Antigua and Barbuda
  • 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 and December (UV index 8).