Measurements:
°C
°F
CURRENT WEATHER
14:14
Guam
86°F
SW 13 mph
Feels like: 96°F
Precip: 9%
World Resorts Northern Mariana Islands Guam Weather

7 Day Weather Forecast

10.22
thu
DAY
86°F
SW 13 mph
precip
43%
NIGHT
82°F
W 12 mph
precip
12%
10.23
fri
DAY
86°F
SW 9 mph
precip
7%
NIGHT
82°F
NW 5 mph
precip
11%
10.24
sat
DAY
88°F
NW 8 mph
precip
18%
NIGHT
82°F
NW 6 mph
precip
25%
10.25
sun
DAY
88°F
SW 7 mph
precip
19%
NIGHT
82°F
W 7 mph
precip
20%
10.26
mon
DAY
88°F
W 11 mph
precip
8%
NIGHT
82°F
W 6 mph
precip
26%
10.27
tue
DAY
90°F
SW 7 mph
precip
22%
NIGHT
82°F
W 2 mph
precip
17%
10.28
wed
DAY
88°F
S 4 mph
precip
36%
NIGHT
84°F
SW 4 mph
precip
21%

Guam Sea Water Temperature in October, °F

Select Year: 2026 2025 2024

The average sea surface temperature in October 2026 for Guam was 29.1°F. The maximum and minimum values were 28.4°F and 30.0°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