Northern Mariana Islands Saipan Weather in January — Climate Guide
January in Saipan is high
Saipan Weather in January — Quick Answer
As of 2026- Avg temp
- 29° / 24°
- Rainfall
- 110mm · 11 days
- Crowds
- Busy
As of 2026, Saipan in January averages a high of 29°C and low of 24°C with 110mm of rain over about 11 days. Warm and breezy dry season. Light, breathable clothing, swimwear, reef-safe SPF 50, sunglasses, and a hat. A light layer for breezy boat rides and air-conditioned rooms. A modest cover-up for the WWII memorials.
January is high for Saipan.
January is one of the best months to visit Saipan: dry-season trade winds, warm 24-29°C days, and a sea around 27°C ideal for snorkeling and diving. Rain is lighter and more often brief.
This is peak-season weather, so it overlaps the busiest and priciest stretch around New Year. Book ahead, especially given Saipan's reduced flight schedule.
Travel score
Saipan January Weather Stats
Avg High
29°C
Avg Low
24°C
Rainy Days
11
110mm total
Sunshine
7h
Daily avg
Humidity
78%
comfortable
UV Index
10
Very high
Wind
18 km/h
Gusts 30
Sea Temp
27°C
warm — ideal
Crowds
Busy
At attractions
January Sunrise & Sunset
Air Quality
PM2.5
8 μg/m³
PM10
16 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
33°C
Nighttime
25°C
Humidity and wind affect how the actual temperature feels.
Wind
18 km/h
Max gust 30 km/h
Activities Recommended for January
January Travel Pros & Cons
Pros
- Dry-season weather — warm and reliable
- Sea ~27°C ideal for snorkeling/diving
- Good dive visibility
- Comfortable trade winds
Cons
- Peak-season prices around New Year
- Still high UV — sunburn risk
- Reduced flight options can mean awkward connections
January Events & Festivals
- New Year period — busiest and priciest window
- Dry-season trade winds
- Good visibility for diving
Saipan in January — Full Picture
January is one of the best months to visit Saipan: dry-season trade winds, warm 24-29°C days, and a sea around 27°C ideal for snorkeling and diving. Rain is lighter and more often brief.
This is peak-season weather, so it overlaps the busiest and priciest stretch around New Year. Book ahead, especially given Saipan's reduced flight schedule.
Dive visibility is generally good and the Grotto is at its best on calm mornings. Managaha's lagoon is calm and beginner-friendly.
UV is high year-round near the equator, so reef-safe sunscreen and shade matter even on breezy days. The trade winds keep it comfortable despite the heat.
What to Wear & What to Pack
Warm and breezy dry season. Light, breathable clothing, swimwear, reef-safe SPF 50, sunglasses, and a hat. A light layer for breezy boat rides and air-conditioned rooms. A modest cover-up for the WWII memorials.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
30.3°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)
Current29°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 January Hotel Picks
Frequently Asked Questions
Is January a good time to visit Saipan?
Saipan in January is high. Tourist crowds are busy and flight/hotel prices are peak.
What's the average temperature in Saipan in January?
Saipan January averages a high of 29°C and a low of 24°C.
Does it rain much in Saipan in January?
Saipan January averages 110mm of rainfall over about 11 rainy days.
What should I wear in Saipan in January?
Warm and breezy dry season. Light, breathable clothing, swimwear, reef-safe SPF 50, sunglasses, and a hat. A light layer for breezy boat rides and air-conditioned rooms. A modest cover-up for the WWII memorials.
What time are sunrise and sunset in Saipan in January?
Saipan January sunrise is 06:25 and sunset is 18:05, with 11h 40min of daylight.
What's the air quality like in Saipan in January?
Saipan January air quality (AQI) averages 25, rated Good. PM2.5 averages 8μg/m³.
What activities are recommended in Saipan in January?
In January, Saipan is great for Managaha snorkeling, Grotto diving (certified), WWII memorial loop.
Is January peak season in Saipan?
Saipan January crowds are busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Saipan
View Other Months
Planning a January 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.