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Treasure Cay weather by month
Check out Treasure Cay weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.
Temperature in Treasure Cay (°C)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max temperature (daytime) | 23 |
23 |
25 |
26 |
28 |
30 |
31 |
31 |
30 |
28 |
26 |
24 |
| Min temperature (night-time) | 15 |
15 |
17 |
19 |
21 |
23 |
24 |
24 |
24 |
22 |
19 |
16 |
| Heat & Humidity | 0 |
0 |
L |
M |
M |
H |
VH |
VH |
H |
M |
L |
L |
| Sea temperature | 23 |
23 |
23 |
24 |
26 |
28 |
29 |
30 |
29 |
27 |
25 |
24 |
Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme
Sunshine & UV index in Treasure Cay
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daily hours of sunshine | ||||||||||||
| Daily hours of daylight | 11 |
11 |
12 |
13 |
13 |
14 |
14 |
13 |
12 |
12 |
11 |
10 |
| UV Index (Maximum) | 5 |
7 |
9 |
10 |
11 |
11 |
11 |
11 |
10 |
8 |
6 |
5 |
Rainfall in Treasure Cay
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of days with some rain | 12 |
10 |
10 |
7 |
13 |
18 |
20 |
21 |
21 |
19 |
12 |
12 |
| Average monthly rainfall (mm) | 67 |
74 |
72 |
75 |
140 |
191 |
137 |
146 |
195 |
179 |
76 |
67 |
More about the Treasure Cay
Treasure Cay by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for the Bahamas
Expires at 23:59 on Saturday 28th Feb 2026 · View all Sandals offers
The climate guide for Bahamas (Treasure Cay) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
What's the climate like in Treasure Cay?
Treasure Cay has a hot tropical climate with a short dry season.
Treasure Cay weather in January
Expect daytime maximum temperatures of 23°C in Treasure Cay, Bahamas in January based on long-term weather averages. There are 7 hours of sunshine per day on average with 12 days with some rainfall and typically 67 mm of rainfall in the month.
- 23°C max day temperature
23 - 7 hours of sunshine per day
- 12 days with some rainfall
12 - 15°C min night temperature
15 - 11 hours of daylight per day
11 - No heat & humidity
0 - 67 mm of monthly rainfall
67 - 5 (Moderate) UV index
5 - 23°C sea temperature
23
Treasure Cay weather in February
Expect daytime maximum temperatures of 23°C in Treasure Cay, Bahamas in February based on long-term weather averages. There are 7 hours of sunshine per day on average with 10 days with some rainfall and typically 74 mm of rainfall in the month.
- 23°C max day temperature
23 - 7 hours of sunshine per day
- 10 days with some rainfall
10 - 15°C min night temperature
15 - 11 hours of daylight per day
11 - No heat & humidity
0 - 74 mm of monthly rainfall
74 - 7 (High) UV index
7 - 23°C sea temperature
23
Treasure Cay weather in March
Expect daytime maximum temperatures of 25°C in Treasure Cay, Bahamas in March based on long-term weather averages. There are 8 hours of sunshine per day on average with 10 days with some rainfall and typically 72 mm of rainfall in the month.
- 25°C max day temperature
25 - 8 hours of sunshine per day
- 10 days with some rainfall
10 - 17°C min night temperature
17 - 12 hours of daylight per day
12 - Low heat & humidity
L - 72 mm of monthly rainfall
72 - 9 (Very High) UV index
9 - 23°C sea temperature
23
Treasure Cay weather in April
Expect daytime maximum temperatures of 26°C in Treasure Cay, Bahamas in April based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 75 mm of rainfall in the month.
- 26°C max day temperature
26 - 9 hours of sunshine per day
- 7 days with some rainfall
7 - 19°C min night temperature
19 - 13 hours of daylight per day
13 - Moderate heat & humidity
M - 75 mm of monthly rainfall
75 - 10 (Very High) UV index
10 - 24°C sea temperature
24
Treasure Cay weather in May
Expect daytime maximum temperatures of 28°C in Treasure Cay, Bahamas in May based on long-term weather averages. There are 9 hours of sunshine per day on average with 13 days with some rainfall and typically 140 mm of rainfall in the month.
- 28°C max day temperature
28 - 9 hours of sunshine per day
- 13 days with some rainfall
13 - 21°C min night temperature
21 - 13 hours of daylight per day
13 - Moderate heat & humidity
M - 140 mm of monthly rainfall
140 - 11 (Extreme) UV index
11 - 26°C sea temperature
26
Treasure Cay weather in June
Expect daytime maximum temperatures of 30°C in Treasure Cay, Bahamas in June and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 18 days with some rainfall and typically 191 mm of rainfall in the month.
- 30°C max day temperature
30 - 8 hours of sunshine per day
- 18 days with some rainfall
18 - 23°C min night temperature
23 - 14 hours of daylight per day
14 - High heat & humidity
H - 191 mm of monthly rainfall
191 - 11 (Extreme) UV index
11 - 28°C sea temperature
28
Treasure Cay weather in July
Expect daytime maximum temperatures of 31°C in Treasure Cay, Bahamas in July and very high heat and humidity based on long-term weather averages. There are 9 hours of sunshine per day on average with 20 days with some rainfall and typically 137 mm of rainfall in the month.
- 31°C max day temperature
31 - 9 hours of sunshine per day
- 20 days with some rainfall
20 - 24°C min night temperature
24 - 14 hours of daylight per day
14 - Very High heat & humidity
VH - 137 mm of monthly rainfall
137 - 11 (Extreme) UV index
11 - 29°C sea temperature
29
Treasure Cay weather in August
Expect daytime maximum temperatures of 31°C in Treasure Cay, Bahamas in August and very high heat and humidity based on long-term weather averages. There are 9 hours of sunshine per day on average with 21 days with some rainfall and typically 146 mm of rainfall in the month.
- 31°C max day temperature
31 - 9 hours of sunshine per day
- 21 days with some rainfall
21 - 24°C min night temperature
24 - 13 hours of daylight per day
13 - Very High heat & humidity
VH - 146 mm of monthly rainfall
146 - 11 (Extreme) UV index
11 - 30°C sea temperature
30
Treasure Cay weather in September
Expect daytime maximum temperatures of 30°C in Treasure Cay, Bahamas in September and very high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 21 days with some rainfall and typically 195 mm of rainfall in the month.
- 30°C max day temperature
30 - 7 hours of sunshine per day
- 21 days with some rainfall
21 - 24°C min night temperature
24 - 12 hours of daylight per day
12 - High heat & humidity
H - 195 mm of monthly rainfall
195 - 10 (Very High) UV index
10 - 29°C sea temperature
29
Treasure Cay weather in October
Expect daytime maximum temperatures of 28°C in Treasure Cay, Bahamas in October based on long-term weather averages. There are 7 hours of sunshine per day on average with 19 days with some rainfall and typically 179 mm of rainfall in the month.
- 28°C max day temperature
28 - 7 hours of sunshine per day
- 19 days with some rainfall
19 - 22°C min night temperature
22 - 12 hours of daylight per day
12 - Moderate heat & humidity
M - 179 mm of monthly rainfall
179 - 8 (Very High) UV index
8 - 27°C sea temperature
27
Treasure Cay weather in November
Expect daytime maximum temperatures of 26°C in Treasure Cay, Bahamas in November based on long-term weather averages. There are 7 hours of sunshine per day on average with 12 days with some rainfall and typically 76 mm of rainfall in the month.
- 26°C max day temperature
26 - 7 hours of sunshine per day
- 12 days with some rainfall
12 - 19°C min night temperature
19 - 11 hours of daylight per day
11 - Low heat & humidity
L - 76 mm of monthly rainfall
76 - 6 (High) UV index
6 - 25°C sea temperature
25
Treasure Cay weather in December
Expect daytime maximum temperatures of 24°C in Treasure Cay, Bahamas in December based on long-term weather averages. There are 7 hours of sunshine per day on average with 12 days with some rainfall and typically 67 mm of rainfall in the month.
- 24°C max day temperature
24 - 7 hours of sunshine per day
- 12 days with some rainfall
12 - 16°C min night temperature
16 - 10 hours of daylight per day
10 - Low heat & humidity
L - 67 mm of monthly rainfall
67 - 5 (Moderate) UV index
5 - 24°C sea temperature
24
More about the Treasure Cay
Treasure Cay by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for the Bahamas
- Save up to 55% on Caribbean holiday accommodation
- Plus save up to £800 off select rooms & durations
- Extra 5% discount on selected resorts
Expires at 23:59 on Saturday 28th Feb 2026 · View all Sandals offers
The climate guide for Bahamas (Treasure Cay) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
Compare Treasure Cay weather with the UK
The weather chart below compares the average monthly maximum daytime temperature for Treasure Cay, Bahamas and the UK (London).
Maximum daytime temperature (°C)
Metric (°C / mm) | Imperial (°F / inches)
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