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Weather in Guam Island for May 2026

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

    Temperatures

  • In general, the average temperature in Guam Island at the beginning of May is 29 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 29.7 °C by the end of May.

    • Rain 🌧️

  • Guam Island experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 74.7 mm.

Average dry days
2
Dry days
Average rainy days
29
Rainy days
Average snowy days
0
Snow days
Average temperatures
29°/26°
Temperatures
Average wind speed
23 km/h
Avg max wind
Average humidity
75 %
Avg humidity

Guam Island Weather May

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

Temperatures trend during May in Guam Island

See the weather trend as well as the moving average line

May weather in Guam Island day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
1 May Moderate rain at times
Moderate rain at times
 29° /27° 1.7 mm 6
2 May Moderate rain at times
Moderate rain at times
 29° /26° 2.5 mm 6
3 May Moderate rain at times
Moderate rain at times
 28° /25° 6.9 mm 6
4 May Patchy rain possible
Patchy rain possible
 29° /26° 0.6 mm 6
5 May Patchy rain possible
Patchy rain possible
 29° /27° 0.4 mm 6
6 May Moderate or heavy rain shower
Moderate or heavy rain shower
 29° /26° 2.5 mm 6
7 May Patchy rain possible
Patchy rain possible
 30° /26° 0.3 mm 7
8 May Patchy rain possible
Patchy rain possible
 30° /27° 0.7 mm 7
9 May Patchy rain possible
Patchy rain possible
 29° /26° 1.3 mm 6
10 May Patchy rain possible
Patchy rain possible
 29° /26° 1.2 mm 6
11 May Patchy rain possible
Patchy rain possible
 29° /26° 1.3 mm 6
12 May Cloudy
Cloudy
 30° /26° 0.1 mm 7
13 May Patchy rain possible
Patchy rain possible
 30° /27° 0.7 mm 7
14 May Heavy rain at times
Heavy rain at times
 29° /26° 4.4 mm 6
15 May Patchy rain possible
Patchy rain possible
 29° /26° 0.6 mm 6
16 May Patchy rain possible
Patchy rain possible
 29° /27° 1 mm 6
17 May Patchy rain possible
Patchy rain possible
 29° /26° 1.6 mm 6
18 May Patchy rain possible
Patchy rain possible
 29° /26° 2.2 mm 6
19 May Patchy rain possible
Patchy rain possible
 29° /25° 1.7 mm 6
20 May Moderate rain at times
Moderate rain at times
 30° /26° 2 mm 7
21 May Patchy rain possible
Patchy rain possible
 29° /27° 0.8 mm 6
22 May Moderate or heavy rain shower
Moderate or heavy rain shower
 29° /26° 5 mm 6
23 May Moderate or heavy rain shower
Moderate or heavy rain shower
 29° /26° 5.9 mm 6
24 May Moderate or heavy rain shower
Moderate or heavy rain shower
 30° /27° 5.5 mm 7
25 May Patchy rain possible
Patchy rain possible
 29° /27° 0.2 mm 6
26 May Patchy light drizzle
Patchy light drizzle
 30° /27° 0.7 mm 6
27 May Light rain shower
Light rain shower
 30° /27° 2.1 mm 7
28 May Patchy rain possible
Patchy rain possible
 29° /27° 5.2 mm 6
29 May Patchy rain possible
Patchy rain possible
 30° /27° 3.5 mm 7
30 May Patchy rain possible
Patchy rain possible
 30° /27° 9.9 mm 7
31 May Light rain shower
Light rain shower
 30° /27° 2.3 mm 7
Next
Important Notice
Our weather forecast for Guam Island in May 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 May - FAQ

What are the expected maximum and minimum temperatures in Guam Island during May?
During May, expect a variety of temperatures with highs around 29° and lows near 26°, suitable for diverse activities and preferences.
How much rainfall should be expected in Guam Island during May?
Moderate rainfall is anticipated in Guam Island during May, with a total of 74.7 mm spread over approximately 29 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Guam Island during May?
The average wind speed in Guam Island during May is 23 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Guam Island

Explore the daily rainfall trends and prepare for Guam Islands May weather 💧

UV exposure in Guam Island during May

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

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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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