World Resorts Northern Mariana Islands Guam Weather

Guam 14 Days Forecast

19.05
tue
Day
84°F
W 19 mph
Precip.
100%
Night
81°F
W 17 mph
Precip.
64%
20.05
wed
Day
82°F
W 19 mph
Precip.
100%
Night
81°F
W 19 mph
Precip.
100%
21.05
thu
Day
84°F
W 18 mph
Precip.
100%
Night
81°F
W 12 mph
Precip.
82%
22.05
fri
Day
84°F
W 14 mph
Precip.
100%
Night
81°F
W 15 mph
Precip.
100%
23.05
sat
Day
84°F
SW 16 mph
Precip.
79%
Night
82°F
SW 16 mph
Precip.
100%
24.05
sun
Day
82°F
SW 19 mph
Precip.
100%
Night
81°F
S 24 mph
Precip.
100%
25.05
mon
Day
81°F
S 27 mph
Precip.
100%
Night
81°F
E 21 mph
Precip.
100%
26.05
tue
Day
82°F
E 19 mph
Precip.
100%
Night
81°F
NE 11 mph
Precip.
64%
27.05
wed
Day
84°F
NE 12 mph
Precip.
72%
Night
81°F
NE 8 mph
Precip.
29%
28.05
thu
Day
84°F
NE 8 mph
Precip.
50%
Night
81°F
E 4 mph
Precip.
0%
29.05
fri
Day
84°F
E 4 mph
Precip.
100%
Night
81°F
E 3 mph
Precip.
21%
30.05
sat
Day
84°F
SW 2 mph
Precip.
0%
Night
81°F
W 4 mph
Precip.
49%
31.05
sun
Day
84°F
W 8 mph
Precip.
75%
Night
82°F
W 9 mph
Precip.
0%
01.06
mon
Day
84°F
W 12 mph
Precip.
100%
Night
82°F
W 12 mph
Precip.
28%

Sea water temperature in May, °F

Show year:
2026
2025
2024

The average sea water temperature in May of 2026 was 82.7°F. The highest and lowest sea temperatures during the month were 83.5°F and 82.0°F.

Sea water temperature in June, °F

Show year:
2025
2024
2023

The average sea water temperature in June of 2025 was 85.1°F. The highest and lowest sea temperatures during the month were 85.6°F and 84.4°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
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 84.0 °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
08:18
Guam
+82°F
W 19 mph
Feels like: +90°F
Precip.: 100%
Places in Northern Mariana Islands:
Name
°F
Guam
+82°F
Rota
+82°F
Saipan
+82°F
Susupe
+82°F
Tinian
+82°F
24 Hours Forecast
Guam
Local time: 08:18
May 19, tuesday
0900
82°F
W
19 mph
1200
84°F
W
19 mph
1500
84°F
W
18 mph
1800
82°F
W
17 mph
2100
81°F
W
17 mph
May 20, wednesday
0000
81°F
W
17 mph
0300
81°F
W
18 mph
0600
81°F
W
17 mph
Units of measurement: °C / °F