The climate in Riāsi during December can be summarized as cool and reasonably dry.
December is in the winter in Riāsi and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a cool 17°C (62°F), whilst at night 3°C (38°F) is normal.
Daytime temperature | 16.5°C 61.7°F |
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Nightly temperature | 3.3°C 37.9°F |
Average temperature | 9.9°C 49.8°F |
Daily sunshine | 7.1 hrs |
Avg rainfall | 34 mm 1.3 ins |
Rainy days | 3 days |
Sea temperature | 18.6°C 65.5°F |
Humidity | 72% |
Windspeed | 2.5kph 2 mph |
On average December is the 2nd driest month of the year in Riāsi with around 34mm 1.3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 3 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.1 hours of sunshine per day.
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 Riāsi in December 2025.
Best places to visit in December
Hottest month: | June | 35.9°C 96.6°F |
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Driest month: | November | 19mm 0.7ins |
Sunniest month: | October | 9.8hrs |
Coldest month: | January | 14.4°C 57.9°F |
Wettest month: | August | 270mm 10.6ins |