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Mariana Islands
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Mariana Islands Weather, Climate and Best Time to Visit
Data source：Meteostat
Update date：2025-09
Mariana Islands year round climate
- Spring (March–May): Average 27.1–28.0°C, warm and humid climate, rainfall gradually increases, with the most rainfall in May. Common activities: Diving, snorkeling, beach relaxation. Recommended clothing: Light and breathable short-sleeved clothing, shorts, swimwear, and a light sun-protective jacket.
- Summer (June–August): Average 27.5–27.9°C, hot and humid, with significant rainfall. Common activities: Water activities, viewing tropical plants, island exploration. Recommended clothing: Light and breathable cotton clothing, shorts, sandals, sunscreen, and rain gear.
- Autumn (September–November): Average 27.3–27.8°C, warm and humid climate, with the most rainfall in September, gradually decreasing in October and November. Common activities: Diving, snorkeling, whale watching (depending on the season and species). Recommended clothing: Light and breathable clothing, and a light jacket for occasional rain.
- Winter (December–February): Average 26.7–27.5°C, warm and comfortable climate, with relatively less rainfall. Common activities: Diving, snorkeling, sightseeing. Recommended clothing: Light and breathable clothing, but a light jacket may be needed at night.
Mariana Islands climatological average
Annual average temperature: approx. 27°C / Annual rainfall: approx. 2758 mm / Summer humidity: 75%–85% / Rainiest month: September
Mariana Islands monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
26.7°C
188.3
February
26.8°C
75.3
March
27.1°C
79.3
April
27.6°C
143
May
28°C
316
June
27.9°C
185.7
July
27.6°C
253.3
August
27.5°C
368.3
September
27.6°C
428.3
October
27.3°C
405.3
November
27.8°C
155
December
27.5°C
161
Mariana Islands weather for the next seven days
4/23
Thursday
Patchy rain nearby
28°C/26.5°C
4/24
Friday
Patchy rain nearby
28.1°C/26.4°C
4/25
Saturday
Patchy rain nearby
27.9°C/26.2°C
4/26
Sunday
Patchy rain nearby
27.7°C/25.8°C
4/27
Monday
Patchy rain nearby
27.9°C/25.9°C
4/28
Tuesday
Patchy rain nearby
27.8°C/26.3°C
4/29
Wednesday
Patchy rain nearby
27.7°C/26.4°C
