Northern Mariana Islands Saipan Weather in May — Climate Guide
May in Saipan is moderate
Saipan Weather in May — Quick Answer
As of 2026- Avg temp
- 31° / 25°
- Rainfall
- 120mm · 11 days
- Crowds
- Moderate
As of 2026, Saipan in May averages a high of 31°C and low of 25°C with 120mm of rain over about 11 days. Hot and humid with rising rain. Light, quick-dry clothing, swimwear, reef-safe SPF 50, a packable rain jacket, and a hat.
May is moderate for Saipan.
May is a transition month — hot 25-31°C days, a warm 29°C sea, and rising rainfall as the wetter season approaches. Mornings are often fine with showers building later.
Water is at its warmest and snorkeling stays enjoyable; schedule activities early to dodge afternoon rain.
Travel score
Saipan May Weather Stats
Avg High
31°C
Avg Low
25°C
Rainy Days
11
120mm total
Sunshine
7h
Daily avg
Humidity
78%
humid
UV Index
11
Extreme
Wind
15 km/h
Gusts 28
Sea Temp
29°C
warm — ideal
Crowds
Moderate
At attractions
May 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 28 km/h
Activities Recommended for May
May Travel Pros & Cons
Pros
- Warmest sea of the year (~29°C)
- Moderate prices and crowds
- Often-clear mornings
Cons
- Rising afternoon showers
- Hot and humid
- High UV
- Early edge of typhoon season
May Events & Festivals
- Transition into the wetter season
- Warm sea ~29°C
- Increasing afternoon showers
Saipan in May — Full Picture
May is a transition month — hot 25-31°C days, a warm 29°C sea, and rising rainfall as the wetter season approaches. Mornings are often fine with showers building later.
Water is at its warmest and snorkeling stays enjoyable; schedule activities early to dodge afternoon rain.
Prices are moderate and crowds thinner than the dry-season peak, a reasonable value window if you accept some rain.
UV remains high and humidity climbs, so hydrate, take shade breaks, and keep reef-safe sunscreen handy.
What to Wear & What to Pack
Hot and humid with rising rain. Light, quick-dry clothing, swimwear, reef-safe SPF 50, a packable rain jacket, and a hat.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
Current30.3°C
24.7°C
9/mo
Summer (Jun·Jul·Aug)
31°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 May Hotel Picks
Frequently Asked Questions
Is May a good time to visit Saipan?
Saipan in May is moderate. Tourist crowds are moderate and flight/hotel prices are shoulder.
What's the average temperature in Saipan in May?
Saipan May averages a high of 31°C and a low of 25°C.
Does it rain much in Saipan in May?
Saipan May averages 120mm of rainfall over about 11 rainy days.
What should I wear in Saipan in May?
Hot and humid with rising rain. Light, quick-dry clothing, swimwear, reef-safe SPF 50, a packable rain jacket, and a hat.
What time are sunrise and sunset in Saipan in May?
Saipan May sunrise is 06:00 and sunset is 18:25, with 12h 25min of daylight.
What's the air quality like in Saipan in May?
Saipan May air quality (AQI) averages 25, rated Good. PM2.5 averages 8μg/m³.
What activities are recommended in Saipan in May?
In May, Saipan is great for Morning snorkeling, Grotto diving (calm days), WWII memorial loop.
Is May peak season in Saipan?
Saipan May 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 May trip to Saipan?
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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.