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:
2026
2025
2024

The average sea water temperature in July of 2026 was 84.3°F. The highest and lowest sea temperatures during the month were 85.6°F and 83.1°F.

Monthly sea water temperature in Guam, °F

Which Northern Mariana Islands resorts have warmest sea in July?

Place name July 2026 July 2025
Guam 84.3°F 84.7°F
Rota 84.0°F 85.4°F
Tinian 83.9°F 85.0°F
Saipan 83.8°F 85.0°F
Susupe 83.7°F 85.0°F

Best time for vacation in Guam

Sunniest months:
July 5 days
August 5 days
September 5 days
Warmest months:
July 87.3 °F
June 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 84.0 °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
19:45
Guam
+82°F
NE 9 mph
Feels like: +90°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: 19:45
July 21, tuesday
2100
82°F
NE
9 mph
July 22, wednesday
0000
81°F
NE
6 mph
0300
81°F
NE
2 mph
0600
79°F
N
2 mph
0900
82°F
N
6 mph
1200
86°F
NE
9 mph
1500
84°F
NE
8 mph
1800
82°F
E
5 mph
Units of measurement: °C / °F