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CHamoru Month
📅 March
A month celebrating Guam’s CHamoru culture and traditions, with a good chance to experience local cultural events.
Check official source →🇬🇺 Guam, U.S.
Guam Weather in January
Dry seasonWeather in Guam during January is typically warm in the daytime and mild to warm after sunset, based on 2016–2025 averages of 29°C (84°F) / 25°C (77°F). The 10-year average shows around 15 rainy days and about 81 mm of monthly precipitation, so rain is fairly common.
Avg high84.0°F 28.9°CAvg low76.7°F 24.8°CRainy days~14.8 daysMonthly rain81.3 mm
🧳 Packing guide
What to wear in Guam in January
For what to wear in Guam in January, light, breathable clothes work best, with sun protection for long outdoor days. Add a compact umbrella or light rain jacket because wet weather is common enough to affect sightseeing.
Travel takeaway: The month can be a practical time to visit when your packing matches the daytime-to-evening temperature change.
🗓️ Travel timing at a glance
Guam: 12-month travel weather
Guam is generally drier from January to May and wetter from July to November. Tropical storms and typhoons are an important late-summer and autumn consideration.
JanDry seasonFebDry seasonMarDry seasonAprDry seasonMayDry seasonJunTransition seasonJulWet seasonAugWet season · Typhoon riskSepWet season · Typhoon riskOctWet season · Typhoon riskNovWet season · Typhoon riskDecTransition season
Monthly labels summarize typical climate patterns for trip planning. Always check the latest forecast and tropical-storm alerts before departure.
🎉 Trip planning check
Guam 2026 events & busy periods
Check major events, holidays and periods that may affect crowds, transport or opening hours.
⚠️ Busy / closure period
Liberation Day events
📅 Around Jul 21
Crowds and traffic controls can affect Hagåtña and parade routes, so allow extra time when driving.
Check official source →Event dates, holiday schedules and opening hours can change. Recheck the linked official tourism or government source before departure.
Guam in January · recent 3 years
Compare the most recent complete year with the two years before it. Daily high / low temperatures are shown in °F.
CalendarNo measurable rain🌧️ Rain⛈️ Thunderstorm❄️ SnowHigh / Low · °F
⭐ January 2025 · latest complete year☔ 12 days · 32.9 mm
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
31.6°C/25.8°C
No rain
2
31.4°C/25.9°C
No rain
3
30.1°C/26.2°C
🌧️ 1.4 mm
4
31.2°C/25.4°C
No rain
5
30.1°C/26°C
🌧️ 2.5 mm
6
31.5°C/25.2°C
🌧️ 1.4 mm
7
28.2°C/24.9°C
🌧️ 6.7 mm
8
31.2°C/26.3°C
No rain
9
31°C/25.4°C
🌧️ 2.3 mm
10
31.4°C/25.9°C
🌧️ 1 mm
11
30.7°C/26.6°C
🌧️ 1 mm
12
32.3°C/26.5°C
No rain
13
31.5°C/25.7°C
No rain
14
31.7°C/26.8°C
No rain
15
30.6°C/26.6°C
🌧️ 1.1 mm
16
32.2°C/26.5°C
No rain
17
30.7°C/26.4°C
🌧️ 3.5 mm
18
31.4°C/26.4°C
No rain
19
31.2°C/25.4°C
No rain
20
31.7°C/26.4°C
No rain
21
31.6°C/25.4°C
No rain
22
32.2°C/25.4°C
No rain
23
31.5°C/25.4°C
No rain
24
31.4°C/26.5°C
No rain
25
32.2°C/26.3°C
No rain
26
30.1°C/25.6°C
No rain
27
30°C/23.2°C
🌧️ 6.6 mm
28
31.3°C/24.6°C
🌧️ 1 mm
29
32.1°C/26°C
No rain
30
31.5°C/25.6°C
🌧️ 1.5 mm
31
31.5°C/26.2°C
No rain
January 2024☔ 11 days · 46.5 mm
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
30°C/23.9°C
🌧️ 15.8 mm
2
30.2°C/25.7°C
🌧️ 4.8 mm
3
30.2°C/26°C
No rain
4
29.9°C/25°C
🌧️ 1.7 mm
5
30.8°C/24°C
No rain
6
29.4°C/25.3°C
🌧️ 3.2 mm
7
30.6°C/25.6°C
No rain
8
29°C/25.1°C
🌧️ 2.9 mm
9
30.1°C/25.6°C
No rain
10
30.2°C/26.4°C
No rain
11
29.5°C/25°C
🌧️ 1.9 mm
12
29.1°C/24.7°C
🌧️ 1 mm
13
29.6°C/25.5°C
🌧️ 1.1 mm
14
30°C/25.5°C
No rain
15
27.8°C/24.4°C
🌧️ 1.2 mm
16
30.1°C/24.4°C
No rain
17
27.6°C/23.6°C
🌧️ 4.7 mm
18
28.2°C/23.7°C
No rain
19
28°C/23°C
No rain
20
28.7°C/24.1°C
No rain
21
29.6°C/23.9°C
No rain
22
29.6°C/24.2°C
No rain
23
29.1°C/23.7°C
No rain
24
29.6°C/24.6°C
No rain
25
29°C/25.3°C
No rain
26
29.9°C/25.3°C
No rain
27
27.6°C/24.2°C
🌧️ 1.2 mm
28
29.1°C/24.4°C
No rain
29
27.8°C/24.6°C
No rain
30
28.2°C/24.4°C
No rain
31
29.1°C/23.8°C
No rain
January 2023☔ 19 days · 178.5 mm
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
28.4°C/25.2°C
🌧️ 4.4 mm
2
28.6°C/24°C
🌧️ 7.5 mm
3
28.1°C/25.6°C
🌧️ 1.7 mm
4
28.7°C/24.6°C
🌧️ 6 mm
5
28.8°C/24.7°C
🌧️ 2.7 mm
6
29°C/26°C
No rain
7
28.7°C/25°C
🌧️ 2.7 mm
8
26.6°C/23.6°C
🌧️ 23.8 mm
9
28.9°C/24.1°C
🌧️ 19.6 mm
10
29.2°C/24.1°C
🌧️ 10.8 mm
11
26.8°C/23.2°C
🌧️ 43.1 mm
12
28.6°C/23.1°C
🌧️ 16.3 mm
13
26.8°C/23°C
🌧️ 6.4 mm
14
26.7°C/23.5°C
🌧️ 8.9 mm
15
27.6°C/23.6°C
🌧️ 3.1 mm
16
29.3°C/24.2°C
🌧️ 8.9 mm
17
29.2°C/23.8°C
🌧️ 3.7 mm
18
30.2°C/25.3°C
No rain
19
29.1°C/25.5°C
🌧️ 1.2 mm
20
28.5°C/25.4°C
🌧️ 2.9 mm
21
30°C/25.9°C
No rain
22
29°C/25.9°C
No rain
23
29.8°C/25.4°C
No rain
24
29.5°C/25.6°C
No rain
25
29.8°C/26°C
No rain
26
29.5°C/25.6°C
No rain
27
29.7°C/25.3°C
No rain
28
30.7°C/25.1°C
No rain
29
29.2°C/24.8°C
🌧️ 1.2 mm
30
30°C/24.2°C
No rain
31
30.1°C/25.1°C
No rain
Historical calendars use Open-Meteo reanalysis data. A rainy day is counted when daily precipitation is at least 1 mm. Conditions at a specific hotel, beach or station can differ.
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Current Guam weather and 7-day forecast
When departure is close, the latest forecast matters more than long-term averages.
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Forecast data: MET Norway · CC BY 4.0 · cached by Travel Weather Fairy
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Guam weather in other months
Switch months to compare the seasonal pattern.