Jamestown Weather in May
What's the weather like in Jamestown (South Australia) in May 2026?
The climate in Jamestown during May can be summarized as mild and reasonably dry.
May is in the fall / autumn in Jamestown and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a cool 17°C (63°F), whilst at night 5°C (41°F) is normal.
| Daytime temperature | 17°C 62.5°F |
|---|---|
| Nightly temperature | 5.1°C 41.1°F |
| Average temperature | 11°C 51.8°F |
| Daily sunshine | 6.1 hrs |
| Avg rainfall | 59 mm 2.3 ins |
| Rainy days | 8 days |
| Sea temperature | 18°C 64.5°F |
| Humidity | 62% |
| Windspeed | 9.4kph 6 mph |
On average May is the 5th wettest month of the year in Jamestown with around 59mm 2.3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.1 hours of sunshine per day.
May temperatures in Jamestown
May rainfall
May 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 Jamestown in May 2025.
Other monthly averages
Jamestown weather stats
| Hottest month: | February | 29.5°C 85.1°F |
|---|---|---|
| Driest month: | February | 20mm 0.8ins |
| Sunniest month: | February | 10.4hrs |
| Coldest month: | July | 12.9°C 55.2°F |
| Wettest month: | July | 73mm 2.9ins |
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