Onna Weather & Climate: Best Time to Visit

The weather in Onna changes moderately throughout the year, offering enough variation to appreciate each season. Average daytime temperatures reach a very warm 30°C (86°F) in August. In January, the coolest month of the year, temperatures drop to a pleasant 20°C (68°F).

At night, temperatures range from around 27°C (81°F) in August to 17°C (63°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Onna has a notably wet climate with abundant precipitation, recording 1881 mm (74 in) of rainfall per year. Onna can be quite wet during June, receiving approximately 237 mm (9.3 in) of precipitation over 19 rainy days.

In contrast, during the driest month (November), you will experience much drier conditions, with 107 mm (4.2 in) of precipitation spread across 19 rainy days. For more details, please visit our Onna Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Onna can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 8.0 hours of sunshine daily. In contrast, the city experiences much darker days in February, with only 2.9 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Onna.

The city experiences its highest humidity in June, reaching 83%. In December, the humidity drops to its lowest level at 66%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year