Measurements:
°C
°F
CURRENT WEATHER
16:21
Guam
86°F
W 17 mph
Feels like: 96°F
Precip: 100%
World Resorts Northern Mariana Islands Guam Weather

7 Day Weather Forecast

05.21
thu
DAY
86°F
W 17 mph
precip
100%
NIGHT
84°F
W 13 mph
precip
100%
05.22
fri
DAY
88°F
W 14 mph
precip
100%
NIGHT
84°F
W 16 mph
precip
71%
05.23
sat
DAY
86°F
W 16 mph
precip
100%
NIGHT
84°F
SW 14 mph
precip
100%
05.24
sun
DAY
84°F
W 25 mph
precip
100%
NIGHT
84°F
W 25 mph
precip
100%
05.25
mon
DAY
84°F
W 24 mph
precip
100%
NIGHT
82°F
NW 29 mph
precip
100%
05.26
tue
DAY
82°F
NW 30 mph
precip
100%
NIGHT
84°F
NW 29 mph
precip
100%
05.27
wed
DAY
86°F
N 24 mph
precip
100%
NIGHT
84°F
N 17 mph
precip
100%

Guam Sea Water Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Guam was 28.2°F. The maximum and minimum values were 27.8°F and 28.6°F respectively.

Guam on the Weather Map

Best Time to Visit Guam
The most sunny months:
July 5 days
August 5 days
September 5 days
The most warm months:
June 91.6 °F
July 91.5 °F
August 91.1 °F
Warmest sea temperature:
August 89.4 °F
September 89.4 °F
July 89.2 °F
The most cold months:
February 86.8 °F
January 87.5 °F
March 87.8 °F
The most rainy months:
October 15 days
August 14 days
September 14 days
The most windy months:
February 17 mph
December 17 mph
January 16 mph
more details