Cruz Bay Weather in August
What's the weather like in Cruz Bay (Saint John Island) in August 2025?
The climate in Cruz Bay during August can be summarized as hot, humid and wet.
August is in the summer in Cruz Bay and is typically the warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (87°F), whilst at night 24°C (76°F) is normal.
| Daytime temperature | 30.6°C 87.1°F |
|---|---|
| Nightly temperature | 24.2°C 75.6°F |
| Average temperature | 27.4°C 81.3°F |
| Daily sunshine | 9.1 hrs |
| Avg rainfall | 124 mm 4.9 ins |
| Rainy days | 20 days |
| Sea temperature | 28.7°C 83.6°F |
| Humidity | 76% |
| Windspeed | 18.4kph 11 mph |
On average August is the 5th wettest month of the year in Cruz Bay with around 124mm 4.9 inches of rain making it a wet time to visit. This rainfall is typically spread over 20 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.1 hours of sunshine per day.
August temperatures in Cruz Bay
August rainfall
August hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Cruz Bay in August 2025.
Other monthly averages
Best places to visit in August
Cruz Bay weather stats
| Hottest month: | August | 30.4°C 86.7°F |
|---|---|---|
| Driest month: | February | 54mm 2.1ins |
| Sunniest month: | March | 9.3hrs |
| Coldest month: | January | 27.5°C 81.5°F |
| Wettest month: | October | 161mm 6.3ins |
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