St. George's, Grenada Climate & Monthly Averages
The climate of St. George's
Temperature barely moves in St. George's - 2°C between the average September and the average January. Rainfall does the work instead: 5.4 inches (137 mm) in November against 1.5 inches (38 mm) in April.
Climate quick facts
- Hottest month: September - highs near 85°F (30°C)
- Coldest month: January - highs near 81°F (27°C)
- Decade extremes (2015-2024): 90°F (32°C) high · 71°F (22°C) low
- Wettest month: November (23 rainy days) · Sunniest: April (11.7 h sun/day)
- Climate type: tropical wet-and-dry
- Annual swing: 2°C between the average warmest and coolest month · day to night: 3°C
- Average humidity: 78%
Temperatures through the year
Warmth peaks in September: highs of 85°F (30°C), lows of 79°F (26°C). January is the coolest month, with highs of 81°F (27°C) and lows near 76°F (24°C). The gridded 2015-2024 daily record for this location tops out at 90°F (32°C) and bottoms at 71°F (22°C) - decade extremes, not all-time station records. Between the average September and the average January lie 2°C, a narrower spread than all but 5% of the 3496 cities in our dataset.
Rain, sun and snow
Days and nights are about 3°C apart on average - narrower than almost anywhere else we cover. The wettest month is November (5.4 inches (137 mm) across 23 days) and the driest April.
How St. George's compares
- The city sees 11.2 hours of sunshine on an average day - sunnier than any other city in our 3496-city dataset.
- Rain or snow reaches the ground on 221 days a year - more wet days than 93% of the 3496 cities we track.
- St. George's averages 80°F (27°C) across the year - warmer than 92% of the 3496 cities we track.
Ranked against every city in our dataset, each measured on the same ten-year window.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 81° | 76° | 15 | 2.1 in | 10.9 h/day | 11.5 h | 48% | 77% |
| February | 81° | 76° | 12 | 1.7 in | 11.0 h/day | 11.7 h | 44% | 75% |
| March | 82° | 76° | 14 | 1.7 in | 11.5 h/day | 12.0 h | 47% | 75% |
| April | 83° | 77° | 12 | 1.5 in | 11.7 h/day | 12.4 h | 41% | 75% |
| May | 84° | 78° | 15 | 2.1 in | 11.6 h/day | 12.7 h | 50% | 77% |
| June | 84° | 78° | 21 | 4.1 in | 11.2 h/day | 12.8 h | 69% | 80% |
| July | 83° | 78° | 24 | 5.2 in | 11.2 h/day | 12.8 h | 79% | 81% |
| August | 84° | 78° | 23 | 4.6 in | 11.3 h/day | 12.5 h | 75% | 82% |
| September | 85° | 79° | 20 | 3.7 in | 11.3 h/day | 12.2 h | 65% | 80% |
| October | 84° | 79° | 22 | 4.7 in | 10.9 h/day | 11.8 h | 71% | 81% |
| November | 83° | 78° | 23 | 5.4 in | 10.5 h/day | 11.6 h | 75% | 81% |
| December | 82° | 77° | 19 | 3.2 in | 10.8 h/day | 11.4 h | 62% | 78% |
St. George's month by month
Average high and low for each month, with the bar showing where it sits in St. George's's year (left is the coldest night, right is the warmest afternoon).
January
- Rain
- 15 days
- Sunshine
- 10.9 h
- Daylight
- 11.5 h
February
- Rain
- 12 days
- Sunshine
- 11.0 h
- Daylight
- 11.7 h
March
- Rain
- 14 days
- Sunshine
- 11.5 h
- Daylight
- 12.0 h
April
- Rain
- 12 days
- Sunshine
- 11.7 h
- Daylight
- 12.4 h
May
- Rain
- 15 days
- Sunshine
- 11.6 h
- Daylight
- 12.7 h
June
- Rain
- 21 days
- Sunshine
- 11.2 h
- Daylight
- 12.8 h
July
- Rain
- 24 days
- Sunshine
- 11.2 h
- Daylight
- 12.8 h
August
- Rain
- 23 days
- Sunshine
- 11.3 h
- Daylight
- 12.5 h
September
- Rain
- 20 days
- Sunshine
- 11.3 h
- Daylight
- 12.2 h
October
- Rain
- 22 days
- Sunshine
- 10.9 h
- Daylight
- 11.8 h
November
- Rain
- 23 days
- Sunshine
- 10.5 h
- Daylight
- 11.6 h
December
- Rain
- 19 days
- Sunshine
- 10.8 h
- Daylight
- 11.4 h
Warmer places to go, by month: January · February · March · April · May · June · July · August · September · October · November · December
Seasons in St. George's
March through May
March through May in St. George's sits firmly in the heat, with daytime highs averaging 83°F (28°C) and nights around 77°F (25°C); rain falls on around 42 of the 90 days. Daylight is generous - around 11.6 hours of sun a day. With the moisture factored in, afternoons feel hotter than the reading suggests - the humidity and dew point converter shows why.
June through August
Through June through August, St. George's brings hot afternoons: 84°F (29°C) by day, 78°F (26°C) after dark, and rain falls on around 68 of the 90 days. Daylight is generous - around 11.2 hours of sun a day.
September through November
September through November in St. George's brings hot afternoons, with daytime highs averaging 84°F (29°C) and nights around 79°F (26°C); rain falls on around 64 of the 90 days. Daylight is generous - around 10.9 hours of sun a day.
December through February
December through February runs hot here - highs near 81°F (27°C), nights near 76°F (24°C), and rain falls on around 47 of the 90 days. Daylight is generous - around 10.9 hours of sun a day.
Climate questions, answered
How much does the weather change through the year in St. George's?
How cold does St. George's get in winter?
How hot does St. George's get in summer?
What should I pack for St. George's?
How many rainy days does St. George's get in a year?
Is St. George's warmer or cooler than most cities?
Best time to visit St. George's
Aim for January to May if you get the choice: humidity and rainfall are at their lowest, which is what actually varies here, and highs average 82°F (28°C) against roughly 14 wet days a month. For the same question asked the other way round, see where else is warm in January.
Pack for St. George's with light clothing for the warm months, proper waterproofs rather than an umbrella - wet days are the norm here and moisture-wicking fabrics for the humidity. Note the gap between afternoon and night: September pairs 85°F (30°C) with 79°F (26°C).
St. George's temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need the precipitation in other units? The mm-to-inches rainfall converter handles it.