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Monthly climate in Saipan, Northern Mariana Islands

Last updated: May 6, 2024

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 temperatures with daily means, minimums and maximums for period, average high and low temperatures in Saipan, Northern Mariana Islands.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 28°C
(83°F)		 28°C
(83°F)		 28°C
(83°F)		 29°C
(84°F)		 29°C
(85°F)		 30°C
(86°F)		 30°C
(86°F)		 30°C
(86°F)		 30°C
(86°F)		 30°C
(85°F)		 29°C
(85°F)		 29°C
(84°F)
Mean maximum 28°C
(82°F)		 28°C
(82°F)		 28°C
(82°F)		 28°C
(83°F)		 29°C
(84°F)		 29°C
(84°F)		 29°C
(85°F)		 29°C
(85°F)		 29°C
(85°F)		 29°C
(85°F)		 29°C
(85°F)		 29°C
(84°F)
Average high 27°C
(81°F)		 27°C
(81°F)		 27°C
(81°F)		 28°C
(82°F)		 28°C
(83°F)		 29°C
(84°F)		 29°C
(84°F)		 29°C
(84°F)		 29°C
(84°F)		 28°C
(83°F)		 28°C
(84°F)		 28°C
(83°F)
Daily mean 27°C
(80°F)		 26°C
(80°F)		 27°C
(80°F)		 27°C
(81°F)		 28°C
(82°F)		 28°C
(83°F)		 28°C
(82°F)		 28°C
(82°F)		 28°C
(82°F)		 28°C
(82°F)		 28°C
(82°F)		 27°C
(82°F)
Average low 26°C
(79°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(80°F)		 27°C
(81°F)		 27°C
(81°F)		 27°C
(80°F)		 27°C
(80°F)		 27°C
(80°F)		 27°C
(80°F)		 27°C
(81°F)		 27°C
(80°F)
Mean minimum 25°C
(77°F)		 25°C
(77°F)		 25°C
(77°F)		 25°C
(78°F)		 26°C
(79°F)		 26°C
(80°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(78°F)
Minimum 24°C
(76°F)		 24°C
(76°F)		 25°C
(77°F)		 25°C
(77°F)		 26°C
(78°F)		 25°C
(78°F)		 26°C
(79°F)		 25°C
(78°F)		 25°C
(78°F)		 26°C
(78°F)		 26°C
(78°F)		 25°C
(78°F)

Compare climate in Saipan with other places

Compare temperature, precipitation, sunshine, UV index in Saipan, Northern Mariana Islands with other places around the world.

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 average precipitation and precipitation days in Saipan, Northern Mariana Islands.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 52 (2.0) 57 (2.2) 41 (1.6) 63 (2.5) 59 (2.3) 120 (4.7) 265 (10.4) 409 (16.1) 320 (12.6) 365 (14.4) 141 (5.5) 74 (2.9)
Average precipitation days (≥ 1 mm) 13 17 13 16 20 21 28 29 28 28 23 19

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.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Saipan, Northern Mariana Islands.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 229 263 321 315 339 322 303 275 263 273 282 287
Mean daily daylight hours 11h 19m 11h 37m 12h 2m 12h 28m 12h 49m 13h 0m 12h 54m 12h 36m 12h 11m 11h 46m 11h 24m 11h 13m

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.

Average daily maximum UV levels by month for Saipan, Northern Mariana Islands.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 10 12 14 15 13 14 14 14 14 13 11 10