Photo: P. Hughes · CC BY-SA 4.0 · Wikimedia Commons
St. George'sReport this photo · linked, not stored
St. George'sReport this photo · linked, not stored
Climate guideThirty-year normals for St. George's
St. George's climate by month
Tropical monsoon · AmBest Feb–Apr
Annual mean26°day and night
Seasonal swing2°warmest vs coolest
Precipitation1,489 mm192 wet days a year
12.05° N, 61.75° WElevation 6 mUTC−4 · Atlantic Standard Time
When to goSt. George's · weather score
Best timeFeb–Apr
October: high / low28° / 26°
iSummary
What the weather is like
St. George's has a tropical monsoon climate (Köppen Am): .
The warmest month is September, when afternoons average 28° and nights 26°. February is the coolest month, with highs of 26° and lows of 25°. The difference between the warmest and the coolest month is about 2°, a small seasonal swing typical of places tempered by the sea.
About 1,489 mm of precipitation falls in an average year. August is the wettest month (183 mm, 24 wet days) and March the driest (44 mm, 6 wet days). Cloud cover ranges from 15% in January to 40% in June.
The sea reaches about 29° in September. Sea temperatures lag the air by a month or two, so late summer is usually warmer for swimming than early summer.
Year in figures
- Hottest afternoons
- 28° · September
- Coldest nights
- 25° · February
- Wettest month
- August
- Driest month
- March
- Clearest skies
- January · 15% cloud
- Warmest sea
- 29° · September
- Longest day
- 12 h 50 min
- Shortest day
- 11 h 25 min
iiCharts
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columns, sea temperature lineTemperature curve
Average high, low and seaDaylight
Hours between sunrise and sunset on the 15th of each monthiiiData table
Climate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | 26° | 26° | 26° | 27° | 27° | 27° | 27° | 28° | 28° | 28° | 27° | 27° |
| Average low | 25° | 25° | 25° | 26° | 26° | 26° | 26° | 26° | 26° | 26° | 26° | 25° |
| Precipitation | 90 mm | 54 mm | 44 mm | 61 mm | 79 mm | 156 mm | 167 mm | 183 mm | 159 mm | 169 mm | 198 mm | 129 mm |
| Wet days (≥1 mm) | 11.8 | 6.3 | 5.5 | 6.5 | 12.7 | 22.7 | 22.8 | 24.3 | 21.3 | 21.2 | 21.3 | 16 |
| Cloud cover | 15% | 17% | 19% | 29% | 33% | 40% | 34% | 35% | 39% | 40% | 31% | 22% |
| Sea temperature | 27° | 27° | 27° | 27° | 28° | 28° | 28° | 29° | 29° | 29° | 29° | 28° |
| Daylight | 11h 29 | 11h 45 | 12h 03 | 12h 24 | 12h 41 | 12h 50 | 12h 46 | 12h 32 | 12h 12 | 11h 52 | 11h 34 | 11h 25 |
| Month score | 68 | 81 | 82 | 78 | 60 | 54 | 56 | 54 | 51 | 51 | 57 | 60 |
ivMonth by month
St. George's in every month
January68
26° / 25°
90 mm · 11.8 wet days
February81
26° / 25°
54 mm · 6.3 wet days
March82
26° / 25°
44 mm · 5.5 wet days
April78
27° / 26°
61 mm · 6.5 wet days
May60
27° / 26°
79 mm · 12.7 wet days
June54
27° / 26°
156 mm · 22.7 wet days
July56
27° / 26°
167 mm · 22.8 wet days
August54
28° / 26°
183 mm · 24.3 wet days
September51
28° / 26°
159 mm · 21.3 wet days
October51
28° / 26°
169 mm · 21.2 wet days
November57
27° / 26°
198 mm · 21.3 wet days
December60
27° / 25°
129 mm · 16 wet days