Formosa Weather & Climate: Best Time to Visit

The climate in Formosa is known for significant temperature differences throughout the year, making the weather dynamic. Average daytime temperatures reach a very warm 34°C (93°F) in January. In July, the coolest month of the year, temperatures drop to a comfortable 23°C (73°F).

At night, temperatures range from around 23°C (73°F) in January to 12°C (54°F) in July.

Check out our detailed temperature page for more information.

Temperature ranges by month

Formosa has a notably wet climate with abundant precipitation, recording 1623 mm (64 in) of rainfall per year. Formosa can be quite wet during October, receiving approximately 188 mm (7.4 in) of precipitation over 9 rainy days.

In contrast, during the driest month (August), you will experience much drier conditions, with 67 mm (2.6 in) of precipitation spread across 7 rainy days. For more details, please visit our Formosa Precipitation page.

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

The average number of days each month with precipitation

Formosa can be enjoyed more throughout the sunniest month of December under a blue sky, with approximately 9.4 hours of sunshine daily. In contrast, the city experiences much darker days in June, with only 5.7 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Formosa.

The city experiences its highest humidity in June, reaching 81%. In September, the humidity drops to its lowest level at 70%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year