yearsofweather

Saipan in December:
hot, rain every other day

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

Mean high30°Hottest day 31° (2025)
Mean low25°Coldest night 22.9° (2009)
Rain days15 days6-24 by year
Rainfall77mmDaylight 11.3 → 11.2 h
Saipan's 12 months iBest: January to March
Trip types Beach Poorfrequent rainSightseeing on foot Poorfrequent rain and muggy
Humidity80%30 muggy days
Clear days13 days3 overcast days
Mean wind29 km/h15 windy days
Sea temperature29°28.9-29.1° by year (last 6)
Sunrise / sunset (15th)06:35 / 17:49Daylight 11.3 → 11.2 h

Saipan in December

The drier season begins, though typhoon season is not quite over. From Christmas into the New Year, Asian school-break demand lifts prices toward the yearly high. Northeast winds can make exposed coasts choppy.

Highs averaged 30°C and lows stayed at 25°C, so the heat hung on long after sunset. Rain fell on 15 days of the month on average. A visitor in 2019 met 6 rain days; one in 2022 met 24. The average of 15 hid that gap.

14 days past 30°C made it a month for early starts and a long lunch indoors. Rain days averaged only 5 mm each, mostly light drizzle.

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

‹ November December 2026 January ›
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
1-5rain on 58% of days30° 25°
6-12rain on 50% of days30° 25°
13-19rain on 49% of days30° 25°
20-26rain on 53% of days30° 25°
27-31rain on 39% of days30° 25°

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

1-5rain on 58% of days30° 25°
6-12rain on 50% of days30° 25°
13-19rain on 49% of days30° 25°
20-26rain on 53% of days30° 25°
27-31rain on 39% of days30° 25°
Tap another date to change

2006none
20071mm
20083mm
200915mm
20105mm
2011none
2012none
20132mm
2014none
20152mm
20165mm
20172mm
20189mm
20197mm
20202mm
202121mm
20223mm
20234mm
20241mm
202518mm
Holidays in December (2026)
  • December 8 Constitution Day *
  • December 25 Christmas Day

* Provisional: not yet officially announced.

1 Local public holiday or break (busier, pricier)

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 17 d
2007
4 d 15 d
2008
5 d 14 d
2009
3 d 11 d
2010
3 d 12 d
2011
5 d 18 d
2012
0 d 14 d
2013
0 d 12 d
2014
3 d 8 d
2015
4 d 18 d
2016
5 d 17 d
2017
5 d 17 d
2018
2 d 12 d
2019
0 d 6 d
2020
3 d 18 d
2021
5 d 21 d
2022
5 d 24 d
2023
5 d 18 d
2024
3 d 20 d
2025
5 d 17 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
16
12
11
11
8
11
14
9
10
10
7
9
6
13
8
14
9
8
10
10
12
12
11
11
10
8
6
6
9
6
12
Rain days on trip
54533500345520355535

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

One row per year, one cell per day. 2019 had 6 rain days, 2022 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 December?

Over the past 20 years December averaged 15 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 December?

Days averaged 30°C and nights 25°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 December?

Sea surface temperature averaged 29°C in December, warm enough to stay in for a long swim. Year to year it ranged 28.9-29.1°C. Check local flags for waves and jellyfish on the day.

Is December a good time to visit Saipan?

On warmth and rain days alone, Saipan's easiest months were January to March. December ranked 5 of 12.

Is Saipan humid in December?

Mean relative humidity was 80%, with about 30 muggy days (dew point of 20°C or more) in the month.