Saipan receives its highest rainfall in Aug, while humidity peaks during summer months.
🌧️ Wettest:Aug — 269 mm☀️ Driest:Mar — 27 mm
💧 Humidity peaks at 82% in Aug · annual avg 80%
🌍 Climate Summary
Avg Annual Temp:81.9°F
Avg Annual Rainfall:1340 mm
Avg Humidity:80%
Data Period:1981 – 2025
Saipan Climate Overview
Saipan has a warm subtropical climate with warm summers and mild winters.
Temperatures peak in Jul and drop to their lowest in Feb,
while rainfall is highest during summer months.
Humidity remains high throughout the year creating warm and humid conditions.
📈 Yearly Trends
The warmest year in Saipan's recorded history was 2025
(avg: 82.9°F),
while the coldest year was 1991
(avg: 80.8°F),
based on annual average temperatures.
📊 Key Climate Trends
🌡️ Saipan's temperature has remained relatively stable over the past decade
📊 Minimum temperatures have remained largely stable across the dataset
🌧️ Rainfall has increased noticeably in recent years compared to earlier periods
🌡️ Annual Temperature Trend
View Range:
Average annual high/low · Last 10 years · °F
Saipan's temperatures has remained relatively stable over the past decade.
The highest recorded temperature reached
86.9°F in Jun 2014,
while the lowest dropped to
75.2°F in Mar 1983.
🌧️ Annual Precipitation
View Range:
Total annual precipitation · Last 10 years · mm/year
Annual rainfall in Saipan shows noticeable variation. Rainfall has increased noticeably in recent years compared to earlier periods.
Based on 45 years of data (1981–2025), Jul is typically the hottest month in Saipan, Northern Mariana Islands, with average high temperatures around 85.2°F.
What is the coldest month in Saipan?▼
Feb is the coldest month in Saipan, with average low temperatures around 77.8°F.
What is the rainiest month in Saipan?▼
Aug receives the most rainfall with approximately 269 mm, while Mar is the driest with 27 mm.
What was the highest temperature ever recorded in Saipan?▼
The highest recorded temperature was 86.9°F in Jun 2014. This is part of the historical record spanning 1981–2025.
What was the lowest temperature ever recorded in Saipan?▼
The lowest recorded temperature was 75.2°F in Mar 1983.
How many years of data does this page cover?▼
This page covers 45 years of climate data from 1981 to 2025. As new data is added to the database the page automatically reflects the updated coverage.
How much sunlight does Saipan get?▼
Saipan receives the most sunlight in May with an average solar radiation of 6.91 kWh/m²/day. This solar radiation data, sourced from NASA POWER, is useful for solar energy planning, agriculture, and understanding seasonal sunshine availability in Northern Mariana Islands.
Where does this weather data come from?▼
All climate data is sourced from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite and model data. It provides monthly averages for temperature, precipitation, humidity, wind speed, and solar radiation.
📚 Data Source
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources), a NASA project providing solar and meteorological data for renewable energy, building efficiency, and agricultural research.