Monthly climate in Saipan, Northern Mariana Islands

Under the Köppen–Geiger climate classification Saipan features a tropical rainforest climate (Af). Temperatures typically range between 26 °C (80 °F) and 28 °C (83 °F) through the year, but rarely can drop to 24 °C (76 °F) or can rise to as high as 30 °C (86 °F). The average annual precipitation amounts to about 1966 mm (77.4 inches) and receives 255 rainy days on the 1 mm (0.04 inches) threshold annually. Saipan enjoys an average of 3478 hours of sunshine throughout the year, and daylight varies from 11 hours 13 minutes to 13 hours 0 minutes per day.

Monthly average temperatures in Saipan, Northern Mariana Islands

The warmest months in Saipan are June, July and November, with daily mean temperatures ranging from 28 to 28 °C (82 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 26 to 27 °C (80 - 80 °F) throughout the day. On average each year, Saipan experiences 329 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average precipitation in Saipan, Northern Mariana Islands

Saipan usually has the most precipitation in August, September and October, with an average of 28 rainy days and 365 mm (14.4 inches) of precipitation per month. The driest months in Saipan are January, February and March. On average, 50 mm (2.0 inches) of precipitation falls during these months.

Monthly sunshine hours in Saipan, Northern Mariana Islands

The sunniest months in Saipan are March, May and June, when the sun shines an average of 10 hours 41 minutes a day. Least sunny months in Saipan: January, February and September receive an average of 8 hours 24 minutes of sunshine daily.

Solar UV radiation in Saipan, Northern Mariana Islands

Saipan experiences the highest level of ultraviolet (UV) radiation in April, August and September, when the maximum UV index can reach values of 14 - 15, which corresponds to the Extreme category of sun exposure. January, November and December are in the Very High / Extreme exposure category. In these months, the maximum values of the UV index do not exceed 11. For more detailed information, check out our hourly Saipan UV Index data.