Monthly climate in Saint John's, Antigua and Barbuda

Under the Köppen–Geiger climate classification Saint John's features a tropical rainforest climate (Af).Temperatures typically range between 25 °C (77 °F) and 28 °C (82 °F) through the year, but rarely can drop to 22 °C (72 °F) or can rise to as high as 29 °C (85 °F).The average annual precipitation amounts to about 817 mm (32.2 inches) and receives 191 rainy days on the 1 mm (0.04 inches) threshold annually.Saint John's enjoys an average of 3935 hours of sunshine throughout the year, and daylight varies from 11 hours 7 minutes to 13 hours 7 minutes per day.

Monthly average temperatures in Saint John's, Antigua and Barbuda §

The warmest months in Saint John's are August, September and October, with daily mean temperatures ranging from 27 to 28 °C (81 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 25 to 25 °C (77 - 78 °F) throughout the day. On average each year, Saint John's experiences 321 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average precipitation in Saint John's, Antigua and Barbuda §

Saint John's usually has the most precipitation in August, September and October, with an average of 19 rainy days and 116 mm (4.6 inches) of precipitation per month.The driest months in Saint John's are January, February and March. On average, 34 mm (1.3 inches) of precipitation falls during these months.

Monthly sunshine hours in Saint John's, Antigua and Barbuda §

The sunniest months in Saint John's are May, July and August, when the sun shines an average of 11 hours 29 minutes a day.Least sunny months in Saint John's: January, February and November receive an average of 9 hours 41 minutes of sunshine daily.

Solar UV radiation in Saint John's, Antigua and Barbuda §

Saint John's experiences the highest level of ultraviolet (UV) radiation in April, July and September, when the maximum UV index can reach values of 13 - 14, which corresponds to the Extreme category of sun exposure.January, November and December are in the Very High exposure category. In these months, the maximum values of the UV index do not exceed 9. For more detailed information, check out our hourly Saint John's UV Index data.