Northern Mariana Islands Saipan Weather in August — Climate Guide
August in Saipan is low
Saipan Weather in August — Quick Answer
As of 2026- Avg temp
- 31° / 25°
- Rainfall
- 230mm · 18 days
- Crowds
- Moderate
As of 2026, Saipan in August averages a high of 31°C and low of 25°C with 230mm of rain over about 18 days. Hottest, wettest, most humid. Light quick-dry clothing, swimwear, reef-safe SPF 50, a strong rain jacket, and water shoes.
August is low for Saipan.
August is the wettest month and around the peak of typhoon season — hot 25-31°C days, very high humidity, frequent heavy rain (about 18 wet days), and the year's highest storm risk.
Direct hits remain uncommon in any given year, but August carries the greatest chance of a storm bringing rough seas, downpours, and multi-day flight disruption — plan flexibly and consider travel insurance.
Travel score
Saipan August Weather Stats
Avg High
31°C
Avg Low
25°C
Rainy Days
18
230mm total
Sunshine
6h
Daily avg
Humidity
81%
very humid
UV Index
11
Extreme
Wind
15 km/h
Gusts 35
Sea Temp
29°C
warm — ideal
Crowds
Moderate
At attractions
August Sunrise & Sunset
Air Quality
PM2.5
8 μg/m³
PM10
16 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
36°C
Nighttime
27°C
Humidity and wind affect how the actual temperature feels.
Wind
15 km/h
Max gust 35 km/h
Activities Recommended for August
August Travel Pros & Cons
Pros
- Warm sea (~29°C)
- Greenest landscape
- Fewer crowds at sites
Cons
- Wettest month (~18 wet days)
- Highest typhoon and flight-disruption risk
- Hottest and most humid
August Events & Festivals
- Peak of the wet season
- Highest typhoon risk
- Warm sea ~29°C
Saipan in August — Full Picture
August is the wettest month and around the peak of typhoon season — hot 25-31°C days, very high humidity, frequent heavy rain (about 18 wet days), and the year's highest storm risk.
Direct hits remain uncommon in any given year, but August carries the greatest chance of a storm bringing rough seas, downpours, and multi-day flight disruption — plan flexibly and consider travel insurance.
If you go, schedule water activities around forecasts, keep indoor history options ready, and don't expect dependable sunshine.
UV stays high under cloud; humidity is at its heaviest.
What to Wear & What to Pack
Hottest, wettest, most humid. Light quick-dry clothing, swimwear, reef-safe SPF 50, a strong rain jacket, and water shoes.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
30.3°C
24.7°C
9/mo
Summer (Jun·Jul·Aug)
Current31°C
25°C
15.7/mo
Autumn (Sep·Oct·Nov)
30.7°C
25°C
16.3/mo
Winter (Dec·Jan·Feb)
29°C
24°C
10.7/mo
Saipan Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| January (Best) | 29° | 24° | 11d·110mm | 7h | 78% | 10 | Busy | Peak |
| February (Best) | 29° | 24° | 9d·80mm | 8h | 77% | 10 | Busy | Peak |
| March (Best) | 30° | 24° | 8d·70mm | 8h | 77% | 11 | Busy | Peak |
| 30° | 25° | 8d·80mm | 8h | 77% | 11 | Moderate | Shoulder | |
| 31° | 25° | 11d·120mm | 7h | 78% | 11 | Moderate | Shoulder | |
| 31° | 25° | 13d·130mm | 7h | 79% | 11 | Quiet | Shoulder | |
| 31° | 25° | 16d·180mm | 6h | 80% | 11 | Moderate | Shoulder | |
| 31° | 25° | 18d·230mm | 6h | 81% | 11 | Moderate | Shoulder | |
| 31° | 25° | 18d·220mm | 6h | 81% | 11 | Quiet | Low season | |
| 31° | 25° | 17d·200mm | 6h | 80% | 11 | Quiet | Low season | |
| 30° | 25° | 14d·150mm | 7h | 79% | 10 | Moderate | Shoulder | |
| 29° | 24° | 12d·120mm | 7h | 78% | 10 | Busy | Peak |
View Other Months
Saipan August Hotel Picks
Frequently Asked Questions
Is August a good time to visit Saipan?
Saipan in August is low. Tourist crowds are moderate and flight/hotel prices are shoulder.
What's the average temperature in Saipan in August?
Saipan August averages a high of 31°C and a low of 25°C.
Does it rain much in Saipan in August?
Saipan August averages 230mm of rainfall over about 18 rainy days.
What should I wear in Saipan in August?
Hottest, wettest, most humid. Light quick-dry clothing, swimwear, reef-safe SPF 50, a strong rain jacket, and water shoes.
What time are sunrise and sunset in Saipan in August?
Saipan August sunrise is 06:10 and sunset is 18:25, with 12h 15min of daylight.
What's the air quality like in Saipan in August?
Saipan August air quality (AQI) averages 25, rated Good. PM2.5 averages 8μg/m³.
What activities are recommended in Saipan in August?
In August, Saipan is great for Snorkeling in clear spells, American Memorial Park museum, WWII memorial loop.
Is August peak season in Saipan?
Saipan August crowds are moderate and prices are shoulder. You can travel relatively comfortably without long queues.
Best Months to Visit Saipan
View Other Months
Planning a August trip to Saipan?
You've checked the weather — next come the budget and the route.
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.