yearsofweather

Saipan in January:
hot, frequent rain

Saipan, Northern Mariana Islands · Records from 2006 to 2025. Not a forecast.

Mean high29°Hottest day 30.3° (2024)
Mean low24°Coldest night 22.2° (2018)
Rain days13 days6-24 by year
Rainfall110mmDaylight 11.2 → 11.5 h
Saipan's 12 months iBest: January to March
Trip types Beach Finewarm sea and frequent rainSightseeing on foot Finefrequent rain and muggy
Humidity78%25 muggy days
Clear days7 days5 overcast days
Mean wind30 km/h16 windy days
Sea temperature28.4°28.2-28.8° by year (last 6)
Sunrise / sunset (15th)06:46 / 18:05Daylight 11.2 → 11.5 h

Saipan in January

The drier season is well settled and skies are clearer than in the wet months. Northeast trade winds are blowing, so exposed coasts can get choppy. Holiday and winter-break demand carries over from New Year, so flights and rooms stay pricey.

Days averaged 29°C and nights 24°C. Midday was for air conditioning, a cold drink or a long lunch out of the sun. About 13 days a month saw rain, enough that a wet-weather plan was worth having. Averages hide a lot here: one year saw 6, another 24.

Highs passed 30°C on 1 day on average.

Typhoons i No tropical storm passed within 300 km in this month over the last 20 years. Typhoons: March to May and July to November

Date by date i

‹ December January 2027 February ›
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
1-2rain on 43% of days29° 24°
3-9rain on 50% of days29° 24°
10-16rain on 49% of days29° 24°
17-23rain on 30% of days29° 24°
24-30rain on 34% of days29° 24°
January 31rain on 35% of days29° 24°

0-5/206-8/209-11/2012-20/20

1-2rain on 43% of days29° 24°
3-9rain on 50% of days29° 24°
10-16rain on 49% of days29° 24°
17-23rain on 30% of days29° 24°
24-30rain on 34% of days29° 24°
January 31rain on 35% of days29° 24°
Tap another date to change

20061mm
20071mm
2008none
2009none
20102mm
20113mm
20123mm
2013none
20143mm
2015none
2016none
20172mm
20181mm
2019none
2020none
20212mm
20227mm
20235mm
20241mm
20254mm
Holidays in January (2027)
  • January 1 New Year's Day
  • January 18 Martin Luther King, Jr. Day
  • January 18 Birthday of Martin Luther King, Jr.

1 Local public holiday or break (busier, pricier)1 US holidays (flights fill up)

Your trip dates, the past 20 years

Trip dates ~

You can also click two dates on the axis. Hover a cell to see that day's rain.
Trip rain days Month rain days
2006
5 d 16 d
2007
3 d 13 d
2008
4 d 6 d
2009
3 d 9 d
2010
4 d 15 d
2011
6 d 18 d
2012
6 d 12 d
2013
3 d 12 d
2014
5 d 24 d
2015
3 d 17 d
2016
2 d 8 d
2017
2 d 16 d
2018
2 d 10 d
2019
1 d 7 d
2020
2 d 12 d
2021
2 d 8 d
2022
5 d 13 d
2023
7 d 17 d
2024
2 d 8 d
2025
3 d 11 d
Years with rain
Tap a date to start, tap another to end. Each cell is that date in one year.
'06'07'08'09'10'11'12'13'14'15'16'17'18'19'20'21'22'23'24'25
of 20
9
8
9
12
13
8
9
9
10
13
10
8
11
8
9
10
5
6
7
6
6
4
8
5
7
6
7
6
5
11
7
Rain days on trip
53434663532221225723

No rain1-9 mm10 mm or more Dates outside your trip are dimmed.

One row per year, one cell per day. 2008 had 6 rain days, 2014 had 24.

Saipan through the year

MonthHighLowRain daysRainfallSea
JanuaryGood 29°24°13 days110mm 28°
FebruaryGood 29°24°11 days62mm 28°
MarchGood 30°24°12 days69mm 28°
April 31°25°12 days77mm 29°
May 31°26°14 days89mm 29°
June 31°26°16 days106mm 30°
July 31°26°21 days218mm 30°
August 31°25°20 days342mm 30°
September 31°25°21 days312mm 30°
October 30°25°23 days326mm 30°
November 30°25°16 days107mm 30°
December 30°25°15 days77mm 29°

Common questions

Does it rain a lot in Saipan in January?

Over the past 20 years January averaged 13 rain days (1 mm or more) out of 31. Individual years ran from 6 in the driest to 24 in the wettest.

What should I wear in Saipan in January?

Days averaged 29°C and nights 24°C. Pack an umbrella, sandals that can get wet, T-shirts, sunscreen plus a hat, a swimsuit, and insect repellent.

Can you swim in Saipan in January?

Sea surface temperature averaged 28.4°C in January, warm enough to stay in for a long swim. Year to year it ranged 28.2-28.8°C. Check local flags for waves and jellyfish on the day.

Is January a good time to visit Saipan?

On warmth and rain days alone, Saipan's easiest months were January to March. January ranked 3 of 12, close to the top.

Is Saipan humid in January?

Mean relative humidity was 78%, with about 25 muggy days (dew point of 20°C or more) in the month.