World Resorts Northern Mariana Islands Guam Weather

Guam Sea Temperature in January

Average sea water temperature in January:
+82.8°F
Minimum sea water temperature in January: 84.4°F
Maximum sea water temperature in January: 80.1°F

Daily sea water temperature in January, °F

Show year:
2026
2025
2024

The average sea water temperature in January of 2026 was 82.9°F. The highest and lowest sea temperatures during the month were 83.5°F and 82.6°F.

Monthly sea water temperature in Guam, °F

Which Northern Mariana Islands resorts have warmest sea in January?

Place name January 2026 January 2025
Rota 83.5°F 83.6°F
Saipan 83.4°F 83.5°F
Tinian 83.4°F 83.6°F
Susupe 83.4°F 83.5°F
Guam 82.9°F 83.4°F

Best time for vacation in Guam

Sunniest months:
July 5 days
August 5 days
September 5 days
Warmest months:
June 87.5 °F
July 87.3 °F
August 87.0 °F
Warmest sea temp:
August 85.5 °F
September 85.4 °F
July 85.3 °F
Coldest months:
February 83.1 °F
January 83.8 °F
March 84.2 °F
Rainiest months:
October 15 days
August 14 days
September 14 days
Windiest months:
February 17.3 mph
December 17.2 mph
January 16.5 mph

Guam on a weather map

Current weather
02:30
Guam
+75°F
SW 16 mph
Feels like: +79°F
Precip.: 100%
Places in Northern Mariana Islands:
Name
°F
Guam
+75°F
Rota
+79°F
Saipan
+79°F
Susupe
+79°F
Tinian
+79°F
24 Hours Forecast
Guam
Local time: 02:30
March 19, thursday
0300
75°F
SW
16 mph
0600
77°F
SW
16 mph
0900
79°F
SW
18 mph
1200
79°F
SW
19 mph
1500
79°F
SW
18 mph
1800
79°F
SW
17 mph
2100
79°F
SW
16 mph
March 20, friday
0000
77°F
SW
16 mph
Units of measurement: °C / °F