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Weather in Guam Island for January 2027

Your guide to Guam Island weather in January - trends and predictions

    Temperatures

  • In general, the average temperature in Guam Island at the beginning of January is 28.4 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 28.6 °C by the end of January.

    • Rain 🌧️

  • Guam Island experiences heavy rainfall in January, with over 20 rainy days and an average total precipitation 125.7 mm.

Average dry days
6
Dry days
Average rainy days
25
Rainy days
Average snowy days
0
Snow days
Average temperatures
28°/26°
Temperatures
Average wind speed
26 km/h
Avg max wind
Average humidity
77 %
Avg humidity

Guam Island Weather January

Move between months or click on a day
December
February
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Patchy rain possible
29°
2
Patchy rain possible
29°
3
Patchy rain possible
28°
4
Patchy rain possible
28°
5
Moderate rain at times
28°
6
Moderate rain at times
29°
7
Moderate or heavy rain shower
28°
8
Patchy rain possible
28°
9
Moderate rain at times
28°
10
Overcast
29°
11
Patchy rain possible
29°
12
Moderate rain at times
29°
13
Patchy rain possible
28°
14
Overcast
29°
15
Heavy rain at times
28°
16
Patchy rain possible
29°
17
Moderate rain at times
28°
18
Overcast
29°
19
Overcast
29°
20
Patchy rain possible
29°
21
Patchy rain possible
28°
22
Patchy rain possible
29°
23
Patchy rain possible
29°
24
Cloudy
29°
25
Patchy rain possible
29°
26
Patchy rain possible
28°
27
Moderate rain at times
28°
28
Patchy rain possible
29°
29
Cloudy
29°
30
Patchy rain possible
29°
31
Patchy rain possible
28°

Temperatures trend during January in Guam Island

See the weather trend as well as the moving average line

January weather in Guam Island day by day

Click on a date for more information
December February
Date Weather Temperatures Rain UV More
1 Jan. Patchy rain possible
Patchy rain possible
 29° /26° 2 mm 5
2 Jan. Patchy rain possible
Patchy rain possible
 29° /26° 0.5 mm 6
3 Jan. Patchy rain possible
Patchy rain possible
 28° /26° 1.7 mm 6
4 Jan. Patchy rain possible
Patchy rain possible
 28° /26° 1.2 mm 5
5 Jan. Moderate rain at times
Moderate rain at times
 28° /26° 2.3 mm 5
6 Jan. Moderate rain at times
Moderate rain at times
 29° /26° 4.7 mm 5
7 Jan. Moderate or heavy rain shower
Moderate or heavy rain shower
 28° /25° 17.6 mm 5
8 Jan. Patchy rain possible
Patchy rain possible
 28° /26° 0.4 mm 5
9 Jan. Moderate rain at times
Moderate rain at times
 28° /26° 2 mm 4
10 Jan. Overcast
Overcast
 29° /26° 0.9 mm 5
11 Jan. Patchy rain possible
Patchy rain possible
 29° /26° 0.7 mm 5
12 Jan. Moderate rain at times
Moderate rain at times
 29° /26° 2.4 mm 5
13 Jan. Patchy rain possible
Patchy rain possible
 28° /26° 6.3 mm 5
14 Jan. Overcast
Overcast
 29° /26° 9.5 mm 5
15 Jan. Heavy rain at times
Heavy rain at times
 28° /26° 13.6 mm 4
16 Jan. Patchy rain possible
Patchy rain possible
 29° /26° 1.4 mm 6
17 Jan. Moderate rain at times
Moderate rain at times
 28° /26° 1.9 mm 6
18 Jan. Overcast
Overcast
 29° /26° 0 mm 6
19 Jan. Overcast
Overcast
 29° /25° 0.2 mm 5
20 Jan. Patchy rain possible
Patchy rain possible
 29° /26° 1 mm 5
21 Jan. Patchy rain possible
Patchy rain possible
 28° /26° 1.8 mm 5
22 Jan. Patchy rain possible
Patchy rain possible
 29° /26° 8.4 mm 5
23 Jan. Patchy rain possible
Patchy rain possible
 29° /26° 1.7 mm 5
24 Jan. Cloudy
Cloudy
 29° /26° 2.2 mm 5
25 Jan. Patchy rain possible
Patchy rain possible
 29° /26° 1.1 mm 7
26 Jan. Patchy rain possible
Patchy rain possible
 28° /24° 13.7 mm 5
27 Jan. Moderate rain at times
Moderate rain at times
 28° /25° 12.5 mm 5
28 Jan. Patchy rain possible
Patchy rain possible
 29° /25° 7.6 mm 5
29 Jan. Cloudy
Cloudy
 29° /26° 3.2 mm 5
30 Jan. Patchy rain possible
Patchy rain possible
 29° /26° 1.3 mm 6
31 Jan. Patchy rain possible
Patchy rain possible
 28° /26° 1.9 mm 6
Next
Important Notice
Our weather forecast for Guam Island in January is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Guam Island forecast closer to your planned date for the most up-to-date weather information.
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Guam Island in January - FAQ

What are the expected maximum and minimum temperatures in Guam Island during January?

During January, expect a variety of temperatures with highs around 28° and lows near 26°, suitable for diverse activities and preferences.

How much rainfall should be expected in Guam Island during January?

Significant rainfall exceeding 125.7 mm is expected in Guam Island during January, occurring over more than 25 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Guam Island during January?

The average wind speed in Guam Island during January is 26 km/h, suggesting breezy to windy conditions, depending on your activities.

January rainfall patterns in Guam Island

Explore the daily rainfall trends and prepare for Guam Islands January weather 💧
Typically, Guam Island has 25 rainy days in January with a total of 125.7 mm of rainfall.

UV exposure in Guam Island during January

Stay informed about UV levels for safe outdoor activities throughout the month of January ☀️

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Location coordinates Where is Guam Island?

Get accurate weather forecasts for Guam Island, located at latitude 13.431 and longitude 144.753. Stay updated with localized weather information tailored for Guam Island.

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