yearsofweather

Guam in April:
seriously hot, rain every other day

Guam · Records from 2006 to 2025. Not a forecast.

Mean high31°Hottest day 32.5° (2021)
Mean low25°Coldest night 23.1° (2015)
Rain days16 days7-25 by year
Rainfall104mmDaylight 12.3 → 12.6 h
Guam's 12 months iBest: December to February
Trip types Beach Poorfrequent rainSightseeing on foot Poorhot, frequent rain and muggy
Humidity82%30 muggy days
Clear days9 days5 overcast days
Mean wind25 km/h7 windy days
Sea temperature28.6°28.2-29.1° by year (last 6)
Sunrise / sunset (15th)06:08 / 18:34Daylight 12.3 → 12.6 h

Guam in April

The tail end of the dry season. Rain is still lighter than in the wet months, but rainy days keep creeping up. Humidity rises too, so midday feels sticky. Beach plans are easier in the morning, with the pool or indoors at midday.

Days averaged 31°C and nights 25°C. Midday was for air conditioning, a cold drink or a long lunch out of the sun. Rain came so often (16 days on average) that dry stretches were short and worth using. A visitor in 2010 met 7 rain days; one in 2015 met 25. The average of 16 hid that gap.

Highs topped 30°C on 30 days of the month on average. Mixing in indoor stops at midday made sense.

Typhoons i

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

  • Tapah (2014), 260 km away tropical storm
  • Kong-Rey (2007), 290 km away typhoon strength
1 12 13 24 35 16 37 48 49 610 411 112

Date by date i

‹ March April 2027 May ›
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
1-3rain on 53% of days31° 25°
4-10rain on 46% of days31° 25°
11-17rain on 52% of days31° 25°
18-24rain on 55% of days31° 25°
25-30rain on 68% of days31° 25°

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

1-3rain on 53% of days31° 25°
4-10rain on 46% of days31° 25°
11-17rain on 52% of days31° 25°
18-24rain on 55% of days31° 25°
25-30rain on 68% of days31° 25°
Tap another date to change

2006none
20072mm
2008none
20091mm
2010none
20116mm
20127mm
20131mm
20149mm
201511mm
2016none
201737mm
201813mm
2019none
20201mm
202110mm
20221mm
20231mm
20241mm
20252mm
Holidays in April (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 13 d
2007
1 d 14 d
2008
4 d 19 d
2009
3 d 15 d
2010
2 d 7 d
2011
3 d 23 d
2012
1 d 12 d
2013
0 d 14 d
2014
4 d 21 d
2015
5 d 25 d
2016
2 d 7 d
2017
2 d 15 d
2018
5 d 18 d
2019
1 d 8 d
2020
3 d 13 d
2021
4 d 18 d
2022
6 d 24 d
2023
6 d 24 d
2024
6 d 21 d
2025
2 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
11
14
7
10
11
9
7
11
9
8
11
10
9
9
9
14
11
12
11
12
11
9
11
11
12
15
14
15
13
12
Rain days on trip
51432310452251346662

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

One row per year, one cell per day. 2010 had 7 rain days, 2015 had 25.

Guam through the year

MonthHighLowRain daysRainfallSea
JanuaryGood 30°24°18 days163mm 29°
FebruaryGood 30°24°13 days100mm 28°
March 31°24°15 days91mm 28°
April 31°25°16 days104mm 29°
May 32°25°17 days139mm 29°
June 31°25°19 days155mm 30°
July 31°25°22 days314mm 30°
August 31°25°23 days451mm 30°
September 31°25°24 days444mm 30°
October 31°25°24 days427mm 30°
November 31°25°20 days186mm 30°
DecemberGood 30°25°19 days121mm 29°

Common questions

Does it rain a lot in Guam in April?

Over the past 20 years April averaged 16 rain days (1 mm or more) out of 30. Individual years ran from 7 in the driest to 25 in the wettest.

What should I wear in Guam in April?

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 Guam in April?

Sea surface temperature averaged 28.6°C in April, warm enough to stay in for a long swim. Year to year it ranged 28.2-29.1°C. Check local flags for waves and jellyfish on the day.

Is April a good time to visit Guam?

On warmth and rain days alone, Guam's easiest months were December to February. April ranked 10 of 12.

Is Guam humid in April?

Mean relative humidity was 82%, with about 30 muggy days (dew point of 20°C or more) in the month.