26 to 29°C
3369 hours
sunshine per day
692 mm
110 days
255 days
0 days

Climate of Saint John’s

Saint John’s has a tropical rainforest climate. It is usually (very) warm, humid and rainy all year round. The average annual temperature for Saint John’s is 52° degrees and there is about 272 inch of rain in a year. It is dry for 52 days a year with an average humidity of 76% and an UV-index of 7.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 26°C and 29°C
  • Night:the average nighttime temperature is between 25°C and 28°C
  • Sea temperature: the sea temperature is between 27°C and 30°C
  • Rain: it rains 255 days and there is a total of approximately 692 mm rainfall
  • Sun hours: throughout the year there are 3369 sun hours
Maximum temperature: between 26°C and 29°C
Warmest month: 29°C in August
Coldest month: 26°C in January
Night temperature: between 25°C and 28°C
Sea temperature: between 27°C and 30°C
Dry days: 110 days
Days with rain: 255 days
Days with snow: 0 days
Total rain sum: 692 mm
Hours of sunshine: 3369 hours

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Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Saint John’s.

Precipitation graph

This graph shows the average amount of rainfall per month for Saint John’s.

Climate table of Saint John’s

In this climate table you can see at a glance what the average weather per month is for Saint John’s. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Saint John’s might be like in a given month.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°F) 79 79 79 80 81 82 83 83 84 83 82 81
Night temp. (°F) 78 77 77 78 80 81 82 82 83 82 81 79
Water temp. (°F) 81 80 82 83 85 85 85 87 87 86 85 83
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (inch) 11 8 7 15 24 17 26 32 34 40 37 21
Days with rain 21 17 17 18 23 20 24 23 23 23 23 23
Dry days 10 11 14 12 8 10 7 8 7 8 7 8
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 7 9 9 11 11 11 11 11 11 7 7 7
Wind force (Bft) 4 4 4 4 4 4 4 4 4 4 4 4
UV-index 7 7 7 7 7 7 7 7 7 7 7 7

Best time to visit Saint John’s

The best time to visit Saint John’s on Antigua and Barbuda is from January through September and November and December. In this period you have a warm temperature and little precipitation. The highest average temperature in Saint John’s is 84°F in September and the lowest is 79°F in January. The highest water temperature is 87°F and at its coldest the water is 80°F.

Climate of Saint John’s by month

What is the average climate in a given month for Saint John’s? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

Saint John’s weather experiences

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