Annual mean 28°C · wettest around August · prevailing wind E
Warmest
30.9 °C
Coldest
27.9 °C
Wettest
42%
Windiest
5.8 m/s
Prevailing
E
5.1 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Castries over the whole year is 28°C. September is the hottest month, with highs of about 31°C; February is the coldest, with lows of about 25°C. The rainy (wet) season in Castries runs from June to November, peaking in August with a 40% chance of rain on a given day. The dry season is December to May; April is the driest month, at 16%. Winds in Castries are highest in June, averaging 4.7 m/s (17 km/h), and lightest in October, at 3.0 m/s (11 km/h). The prevailing wind is from the E. The clearest skies in Castries come in September, when the sky is typically 50% covered; June is the cloudiest month, at 62%.
Month by month Castries climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
28°C
25°C
29°C
26%
54%
3.9 m/s
23
73
0
February
28°C
25°C
29°C
17%
53%
4.3 m/s
33
75
1
March
29°C
25°C
29°C
22%
52%
4.2 m/s
21
74
0
April
30°C
26°C
30°C
16%
54%
4.1 m/s
11
70
0
May
30°C
27°C
32°C
18%
61%
4.6 m/s
3
63
0
June
30°C
27°C
32°C
32%
62%
4.7 m/s
2
61
0
July
30°C
27°C
32°C
39%
58%
4.2 m/s
1
54
0
August
30°C
28°C
33°C
40%
53%
3.7 m/s
0
44
0
September
31°C
27°C
34°C
39%
50%
3.3 m/s
0
29
0
October
30°C
27°C
33°C
36%
51%
3.0 m/s
1
44
0
November
30°C
26°C
32°C
35%
53%
3.2 m/s
1
57
0
December
29°C
26°C
31°C
27%
50%
3.8 m/s
9
71
0
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Castries weather by season
Year round, Castries has days of about 28°C at their warmest in January, its coolest month, and 31°C in September, its warmest; the coolest hours of the day run from 25°C to 28°C through the year, and the average temperature over the year is 28°C around the clock. Rain is most likely around August and least likely around April. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Castries weather in winterDecember to February
High 28°CLow 25°CRain 24%
Winter in Castries has typical daily highs of about 28°C and lows of about 25°C, with a 24% chance of rain on a given day.
Castries weather in springMarch to May
High 29°CLow 26°CRain 19%
Spring in Castries has typical daily highs of about 29°C and lows of about 26°C, with a 19% chance of rain on a given day.
Castries weather in summerJune to August
High 30°CLow 27°CRain 37%
Summer in Castries has typical daily highs of about 30°C and lows of about 27°C, with a 37% chance of rain on a given day.
Castries weather in autumnSeptember to November
High 30°CLow 27°CRain 37%
Autumn in Castries has typical daily highs of about 30°C and lows of about 27°C, with a 37% chance of rain on a given day.
When is the rainy season in Castries?
The rainy (wet) season in Castries runs from June to November, peaking in August with a 40% chance of rain on a given day. The dry season is December to May; April is the driest month, at 16%.
What time of year is Castries windiest?
Winds in Castries are highest in June, averaging 4.7 m/s (17 km/h), and lightest in October, at 3.0 m/s (11 km/h). The prevailing wind is from the E.
What is the average temperature in Castries year round?
The average temperature in Castries over the whole year is 28°C. September is the hottest month, with highs of about 31°C; February is the coldest, with lows of about 25°C.