Climate averages 1991–2020

Saipan weather
in January.

A warm, moderately wet month: the 11th warmest and the 4th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 26.2°C Daytime mean, January

Average low 24.1°C Night-time mean, January

Rainfall 61 mm 14 days with ≥1 mm

Daylight 11 h Sunrise to sunset, per day

January is a warm month in Saipan: daytime highs average 26.2°C and nights cool to about 24.1°C. By daytime temperature it is the 11th warmest of the 12 months.

Expect about 61 mm of rain on roughly 14 days, which makes January a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 20 min on an average January day.

The nearest other city in this atlas is Hagåtña (221 km away). In January its highs average 27.3°C, 1.1°C warmer than Saipan, with 71 mm of rain.

From January to February, average highs fall by 0.2°C to 26.0°C, and monthly rainfall falls from 61 mm to 40 mm.

The annual picture

January in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Saipan climate table

1991–2020

Monthly climate averages for Saipan, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	26.2°C24.1°C	24.1°C	61	13.6	11.311 h
February	26.0°C23.8°C	23.8°C	40	11.4	11.612 h
March	26.5°C24.0°C	24.0°C	37	9.8	12.012 h
April	27.1°C24.6°C	24.6°C	50	10.4	12.512 h
May	27.7°C25.0°C	25.0°C	64	13.2	12.813 h
June	27.9°C25.3°C	25.3°C	100	17.9	13.013 h
July	27.4°C24.9°C	24.9°C	223	27.0	12.913 h
August	27.2°C24.8°C	24.8°C	340	28.2	12.613 h
September	27.1°C24.8°C	24.8°C	298	26.6	12.212 h
October	27.1°C24.8°C	24.8°C	304	25.6	11.812 h
November	27.2°C25.0°C	25.0°C	133	19.0	11.411 h
December	26.9°C24.8°C	24.8°C	67	14.8	11.211 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

January in nearby cities

Distance from Saipan

Hagåtña in JanuaryGuam · 221 kmHigh 27.3°C · Low 25.8°C · 71 mm rain

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Saipan) is explained once on the Saipan year overview and on the Sources, method and limits page.