Northern Mariana Islands weather in August 2025

Expect 31°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Northern Mariana Islands in August. Check more long-term weather averages for Northern Mariana Islands in August before you book your next holiday to Northern Mariana Islands in 2025/2026.

  • 31°C maximum daytime temperature in August in Northern Mariana Islands (Saipan)31
    31°C max day temperature
  • 5 hours of sunshine per day
  • 21 days with some rainfall in August in Northern Mariana Islands (Saipan)21
    21 days with some rainfall
  • 25°C minimum night-time temperature in August in Northern Mariana Islands (Saipan)25
    25°C min night temperature
  • 13 hours of daylight per day in August in Northern Mariana Islands (Saipan)13
    13 hours of daylight per day
  • Very high heat & humidity in August in Northern Mariana Islands (Saipan)VH
    Very High heat & humidity
  • 283 mm monthly rainfall in August in Northern Mariana Islands (Saipan)283
    283 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in Northern Mariana Islands (Saipan)11
    11+ (Extreme) UV index
  • 29°C sea temperature in August in Northern Mariana Islands (Saipan)29
    29°C sea temperature

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The August weather guide for Northern Mariana Islands (Saipan) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Northern Mariana Islands destinations

Below are average maximum temperatures at popular countries, regions and places in the Northern Mariana Islands in August. Select a holiday destination to see more weather parameters.

All Northern Mariana Islands destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in the Northern Mariana Islands in August?

Daytime temperatures usually reach 31°C in Saipan, Northern Mariana Islands in August with very high heat and humidity, falling to 25°C at night.

How sunny is it in the Northern Mariana Islands in August?

There are normally 5 hours of bright sunshine each day in Saipan, Northern Mariana Islands in August - that's 41% of daylight hours.

How warm is the sea around the Northern Mariana Islands in August?

The average sea temperature around Saipan, Northern Mariana Islands in August is 29°C.

Does it rain in the Northern Mariana Islands in August?

There are usually 21 days with some rain in Saipan, Northern Mariana Islands in August and the average monthly rainfall is 283mm.

What is the chance of a typhoon in the Northern Mariana Islands in August?

On average 2 days in August in Saipan, Northern Mariana Islands are likely to be affected by the passage of one or more tropical storms.

Northern Mariana Islands August sunrise & sunset times

Browse the sunrise and sunset times for Northern Mariana Islands in August 2025. Select a month to view Northern Mariana Islands sunrise and sunset times for the next 12 months. The Northern Mariana Islands sunrise and sunset times shown below are for Saipan.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:59 18:47
Saturday, 16th August 2025 06:03 18:40
Sunday, 31st August 2025 06:04 18:30

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