World Resorts Northern Mariana Islands Guam Weather

Guam Sea Temperature in July

Average sea water temperature in July:
+85.3°F
Minimum sea water temperature in July: 87.6°F
Maximum sea water temperature in July: 82.8°F

Daily sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 84.7°F. The highest and lowest sea temperatures during the month were 85.5°F and 83.7°F.

Monthly sea water temperature in Guam, °F

Which Northern Mariana Islands resorts have warmest sea in July?

Place name July 2025 July 2024
Rota 85.4°F 85.6°F
Saipan 85.0°F 85.7°F
Tinian 85.0°F 85.7°F
Susupe 85.0°F 85.7°F
Guam 84.7°F 85.7°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 83.2 °F
January 83.9 °F
March 84.2 °F
Rainiest months:
October 15 days
August 14 days
September 14 days
Windiest months:
February 17.4 mph
December 17.2 mph
January 16.8 mph

Guam on a weather map

Current weather
12:02
Guam
+82°F
W 15 mph
Feels like: +90°F
Precip.: 67%
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: 12:02
January 05, monday
1500
82°F
W
14 mph
1800
81°F
W
12 mph
2100
81°F
W
12 mph
January 06, tuesday
0000
81°F
W
9 mph
0300
79°F
W
11 mph
0600
79°F
W
9 mph
0900
81°F
W
12 mph
1200
82°F
SW
12 mph
Units of measurement: °C / °F