World Resorts Northern Mariana Islands Guam Weather

Guam 14 Days Forecast

19.03
thu
Day
79°F
SW 19 mph
Precip.
100%
Night
77°F
SW 16 mph
Precip.
100%
20.03
fri
Day
81°F
SW 18 mph
Precip.
0%
Night
79°F
SW 15 mph
Precip.
0%
21.03
sat
Day
81°F
SW 19 mph
Precip.
100%
Night
79°F
W 19 mph
Precip.
0%
22.03
sun
Day
82°F
SW 18 mph
Precip.
100%
Night
81°F
SW 19 mph
Precip.
0%
23.03
mon
Day
81°F
SW 19 mph
Precip.
100%
Night
79°F
SW 17 mph
Precip.
100%
24.03
tue
Day
81°F
SW 17 mph
Precip.
100%
Night
79°F
SW 14 mph
Precip.
100%
25.03
wed
Day
82°F
SW 15 mph
Precip.
100%
Night
79°F
SW 13 mph
Precip.
100%
26.03
thu
Day
81°F
SW 16 mph
Precip.
100%
Night
79°F
SW 12 mph
Precip.
100%
27.03
fri
Day
82°F
SW 14 mph
Precip.
78%
Night
79°F
SW 11 mph
Precip.
55%
28.03
sat
Day
82°F
SW 13 mph
Precip.
100%
Night
79°F
SW 12 mph
Precip.
100%
29.03
sun
Day
82°F
SW 14 mph
Precip.
24%
Night
81°F
SW 16 mph
Precip.
22%
30.03
mon
Day
82°F
SW 13 mph
Precip.
0%
Night
79°F
SW 11 mph
Precip.
100%
31.03
tue
Day
82°F
SW 11 mph
Precip.
56%
Night
81°F
SW 12 mph
Precip.
100%

Sea water temperature in March, °F

Show year:
2026
2025
2024

The average sea water temperature in March of 2026 was 81.8°F. The highest and lowest sea temperatures during the month were 82.6°F and 81.1°F.

Sea water temperature in April, °F

Show year:
2025
2024
2023

The average sea water temperature in April of 2025 was 83.5°F. The highest and lowest sea temperatures during the month were 84.2°F and 82.8°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 84.2 °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
01:06
Guam
+77°F
SW 16 mph
Feels like: +81°F
Precip.: 87%
Places in Northern Mariana Islands:
Name
°F
Guam
+77°F
Rota
+79°F
Saipan
+81°F
Susupe
+81°F
Tinian
+81°F
24 Hours Forecast
Guam
Local time: 01:06
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