Climate of Saint John, Dominica
Area-weighted average across Saint John. For where people actually live and travel, see the cities below.
Saint John, a subdivision of Dominica, has a tropical climate on average. Area-weighted monthly temperatures across the whole territory range from 23.5°C / 74.3°F in January to 26.2°C / 79.2°F in August, with rainfall from 80 mm / 3.1 in to 229 mm / 9 in depending on the season (1878 mm / 73.9 in total across the year).
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | 23.5°C74.3°F | 127 mm5″ | Tropical |
| February | 23.5°C74.3°F | 83 mm3.3″ | Tropical |
| March | 23.9°C75°F | 80 mm3.1″ | Tropical |
| April | 24.7°C76.5°F | 86 mm3.4″ | Tropical |
| May | 25.6°C78.1°F | 132 mm5.2″ | Tropical |
| June | 26.1°C79°F | 163 mm6.4″ | Tropical |
| July | 26.1°C79°F | 164 mm6.5″ | Tropical |
| August | 26.2°C79.2°F | 218 mm8.6″ | Tropical |
| September | 26°C78.8°F | 229 mm9″ | Tropical |
| October | 25.6°C78.1°F | 213 mm8.4″ | Tropical |
| November | 25°C77°F | 222 mm8.7″ | Tropical |
| December | 24.1°C75.4°F | 161 mm6.3″ | Tropical |
Frequently asked questions
What is the best time to visit Saint John?
Saint John, Dominica does not have a clear sunny-and-dry window by our cutoffs. The warmest month is August at 26.2°C / 79.2°F, and the driest is March at 80 mm / 3.1 in — likely your best travel window. For city-level detail, see the cities section below.
What is the climate of Saint John?
Saint John, Dominica has area-weighted monthly average temperatures ranging from 23.5°C / 74.3°F in January to 26.2°C / 79.2°F in August. Annual rainfall averages about 1878 mm / 73.9 in, with the wettest month being September (229 mm / 9 in) and the driest March (80 mm / 3.1 in). Because this is an area average across the whole subdivision, local city values can differ substantially.
What is the hottest month in Saint John?
The hottest month in Saint John is August, with an area-wide average temperature of 26.2°C / 79.2°F.
What is the coldest month in Saint John?
The coldest month in Saint John is January, with an area-wide average temperature of 23.5°C / 74.3°F.
When does it rain most in Saint John?
The wettest month in Saint John is September, averaging about 229 mm / 9 in of rainfall. The driest is March with about 80 mm / 3.1 in.