yearsofweather

Saipan in August:
properly hot,

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

Mean high31°Hottest day 32.1° (2017)
Mean low25°Coldest night 23.8° (2022)
Rain days20 days14-28 by year
Rainfall342mmDaylight 12.8 → 12.4 h
Saipan's 12 months iBest: January to March
Trip types Beach Poorfrequent rain and storm riskSightseeing on foot Poorhot, frequent rain, muggy and storm risk
Humidity83%31 muggy days
Clear days1 day24 overcast days
Mean wind18 km/h3 windy days
Sea temperature30°29.6-30.4° by year (last 6)
Sunrise / sunset (15th)06:03 / 18:41Daylight 12.8 → 12.4 h

Saipan in August

Deep in the rainy season with many wet days, though rain tends to come in short heavy bursts and then clear. Asian summer holidays and Japan's Obon push rates up. Typhoons pass some years, so leave slack in flight plans.

Saipan in August ran hot: 31°C by day and 25°C at night. By midday the shade was the best seat in town. Rain came so often (20 days on average) that dry stretches were short and worth using. The average is 20, but individual years ran from 14 (2015) to 28 (2007).

With 28 days above 30°C on average, most of the month felt like high summer. Each rainy day brought about 17 mm, closer to downpours than drizzle.

Typhoons i

4 of the last 20 years had a tropical storm pass within 300 km this month.

  • Soudelor (2015), 18 km away typhoon strength
  • Unnamed storm (2016), 80 km away tropical storm
  • Goni (2015), 98 km away typhoon strength
1 2 13 24 35 6 37 48 49 710 211 12

Date by date i

‹ July August 2027 September ›
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
1-7rain on 69% of days31° 25°
8-14rain on 65% of days31° 25°
15-21rain on 72% of days31° 25°
22-28rain on 60% of days31° 25°
29-31rain on 55% of days31° 26°

10/2011-12/2013-14/2015-20/20Rain was common on almost every date this month, so the shades compare dates within this month.

1-7rain on 69% of days31° 25°
8-14rain on 65% of days31° 25°
15-21rain on 72% of days31° 25°
22-28rain on 60% of days31° 25°
29-31rain on 55% of days31° 26°
Tap another date to change

200622mm
200722mm
2008none
20098mm
2010none
20118mm
20124mm
20133mm
20143mm
201587mm
20165mm
20175mm
201836mm
201917mm
20201mm
202127mm
20228mm
2023none
202429mm
202512mm
Holidays in August (2027) · No public holidays this month.

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 18 d
2007
6 d 28 d
2008
1 d 19 d
2009
7 d 22 d
2010
4 d 23 d
2011
6 d 24 d
2012
5 d 26 d
2013
5 d 18 d
2014
3 d 19 d
2015
6 d 14 d
2016
7 d 22 d
2017
4 d 19 d
2018
6 d 21 d
2019
6 d 24 d
2020
3 d 15 d
2021
5 d 23 d
2022
7 d 18 d
2023
0 d 17 d
2024
4 d 16 d
2025
7 d 20 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
12
17
17
11
14
16
10
10
11
13
15
14
13
15
15
15
14
15
14
15
13
10
14
14
12
12
11
11
11
10
12
Rain days on trip
56174655367466357047

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

One row per year, one cell per day. 2015 had 14 rain days, 2007 had 28.

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 August?

Over the past 20 years August averaged 20 rain days (1 mm or more) out of 31. Individual years ran from 14 in the driest to 28 in the wettest.

What should I wear in Saipan in August?

Days averaged 31°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 August?

Sea surface temperature averaged 30°C in August, warm enough to stay in for a long swim. Year to year it ranged 29.6-30.4°C. Check local flags for waves and jellyfish on the day.

Is August a good time to visit Saipan?

On warmth and rain days alone, Saipan's easiest months were January to March. August ranked 9 of 12.

Is Saipan humid in August?

Mean relative humidity was 83%, with about 31 muggy days (dew point of 20°C or more) in the month.