Measurements:
°C
°F
CURRENT WEATHER
10:02
Guam
88°F
E 17 mph
Feels like: 98°F
Precip: 25%
World Resorts Northern Mariana Islands Guam Weather

7 Day Weather Forecast

10.01
thu
DAY
88°F
E 20 mph
precip
52%
NIGHT
86°F
E 26 mph
precip
74%
10.02
fri
DAY
86°F
NE 29 mph
precip
71%
NIGHT
86°F
E 30 mph
precip
62%
10.03
sat
DAY
86°F
NE 25 mph
precip
42%
NIGHT
86°F
E 25 mph
precip
67%
10.04
sun
DAY
88°F
NE 26 mph
precip
61%
NIGHT
86°F
NE 23 mph
precip
66%
10.05
mon
DAY
88°F
NE 27 mph
precip
46%
NIGHT
86°F
NE 23 mph
precip
45%
10.06
tue
DAY
88°F
NE 22 mph
precip
46%
NIGHT
84°F
NE 17 mph
precip
87%
10.07
wed
DAY
84°F
E 13 mph
precip
41%
NIGHT
82°F
E 12 mph
precip
74%

Guam Sea Water Temperature in October, °F

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Guam was 29.3°F. The maximum and minimum values were 28.9°F and 29.7°F respectively.

Guam on the Weather Map

Best Time to Visit Guam
The most sunny months:
July 5 days
June 4 days
May 4 days
The most warm months:
June 91.4 °F
July 91.2 °F
August 90.9 °F
Warmest sea temperature:
September 89.4 °F
August 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
September 14 days
July 13 days
The most windy months:
February 17 mph
December 17 mph
January 16 mph
more details