World Resorts Northern Mariana Islands Guam Weather

Guam 7 Days Forecast

11.10
sun
Day
82°F
E 9 mph
Precip.
15%
Night
81°F
E 6 mph
Precip.
31%
12.10
mon
Day
82°F
E 8 mph
Precip.
23%
Night
81°F
NE 2 mph
Precip.
22%
13.10
tue
Day
84°F
NE 3 mph
Precip.
17%
Night
79°F
N 4 mph
Precip.
22%
14.10
wed
Day
84°F
W 4 mph
Precip.
6%
Night
79°F
W 6 mph
Precip.
15%
15.10
thu
Day
82°F
W 7 mph
Precip.
16%
Night
79°F
SW 8 mph
Precip.
22%
16.10
fri
Day
84°F
SW 11 mph
Precip.
14%
Night
81°F
SW 8 mph
Precip.
20%
17.10
sat
Day
82°F
S 11 mph
Precip.
22%
Night
81°F
S 11 mph
Precip.
27%

Sea water temperature in October, °F

Show year:
2025
2024
2023

The average sea water temperature in October of 2025 was 84.7°F. The highest and lowest sea temperatures during the month were 85.5°F and 84.0°F.

Air temperature in Guam, °F

Precipitation total in Guam, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Guam

Sunniest months:
July 5 days
June 4 days
May 4 days
Warmest months:
June 87.3 °F
July 87.1 °F
August 86.8 °F
Warmest sea temp:
September 85.4 °F
August 85.4 °F
July 85.3 °F
Coldest months:
February 83.1 °F
January 83.8 °F
March 84.0 °F
Rainiest months:
October 15 days
September 14 days
July 13 days
Windiest months:
February 17.3 mph
December 17.2 mph
January 16.5 mph

Guam on a weather map

Current weather
11:58
Guam
+82°F
E 9 mph
Feels like: +91°F
Precip.: 15%
Places in Northern Mariana Islands:
Name
°F
Guam
+82°F
Rota
+81°F
Saipan
+82°F
Susupe
+82°F
Tinian
+82°F
24 Hours Forecast
Guam
Local time: 11:58
October 11, sunday
1200
82°F
E
9 mph
1500
82°F
E
9 mph
1800
81°F
E
6 mph
2100
81°F
E
4 mph
October 12, monday
0000
81°F
E
6 mph
0300
79°F
SE
6 mph
0600
79°F
SE
4 mph
0900
81°F
E
3 mph
Units of measurement: °C / °F