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 84.7°F. The highest and lowest sea temperatures during the month were 85.8°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 84.7°F 84.7°F
Saipan 84.5°F 85.0°F
Tinian 84.4°F 85.0°F
Rota 84.4°F 85.4°F
Susupe 84.4°F 85.0°F

Best time for vacation in Guam

Sunniest months:
July 5 days
September 5 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
01:02
Guam
+82°F
SE 4 mph
Feels like: +91°F
Precip.: 58%
Places in Northern Mariana Islands:
Name
°F
Guam
+82°F
Rota
+82°F
Saipan
+84°F
Susupe
+84°F
Tinian
+84°F
24 Hours Forecast
Guam
Local time: 01:02
September 20, sunday
0300
82°F
S
2 mph
0600
82°F
NW
2 mph
0900
84°F
N
4 mph
1200
84°F
N
4 mph
1500
84°F
NE
6 mph
1800
82°F
NE
4 mph
2100
82°F
NE
4 mph
September 21, monday
0000
82°F
NE
4 mph
Units of measurement: °C / °F