Union Island weather by month
Check out Union Island weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.
Temperature in Union Island (°C)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max temperature (daytime) | 29 |
29 |
29 |
30 |
30 |
30 |
30 |
30 |
30 |
30 |
30 |
29 |
| Min temperature (night-time) | 21 |
21 |
21 |
22 |
23 |
23 |
23 |
23 |
23 |
23 |
22 |
21 |
| Heat & Humidity | H |
H |
H |
H |
H |
H |
H |
VH |
VH |
VH |
H |
H |
| Sea temperature | 27 |
26 |
27 |
27 |
27 |
27 |
28 |
28 |
29 |
29 |
28 |
28 |
Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme
Sunshine & UV index in Union Island
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daily hours of sunshine | ||||||||||||
| Daily hours of daylight | 11 |
12 |
12 |
12 |
13 |
13 |
13 |
13 |
12 |
12 |
12 |
11 |
| UV Index (Maximum) | 10 |
11 |
11 |
11 |
11 |
11 |
11 |
11 |
11 |
11 |
10 |
9 |
Rainfall in Union Island
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of days with some rain | 16 |
12 |
12 |
10 |
14 |
18 |
21 |
20 |
21 |
18 |
20 |
18 |
| Average monthly rainfall (mm) | 78 |
57 |
59 |
58 |
76 |
155 |
203 |
195 |
186 |
207 |
182 |
138 |






























