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Weather in Guam for September 2024

Your guide to Guam weather in September - trends and predictions

  • Until now, September 2024 in Guam has been nearly identical to the historical average, with a temperature of 28.5 °C (showing only a slight deviation of -0.4 °C).

  • The forecast for the next days in Guam predicts temperatures to be around 29 °C, close to the historical average.

  • In general, the average temperature in Guam at the beginning of September is 29.6 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 28.9 °C by the end of September.

  • Guam experiences an exceptionally high level of rainfall in September, with more than 24 rainy days on average.

  • Is September a good time to visit Guam? check out the best time to travel to Guam page.

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
1
Dry days
Average rainy days
29
Rainy days
Average snowy days
0
Snow days
Average temperatures
29°/27°
Temperatures
Average wind speed
20 km/h
Avg max wind
Average humidity
80 %
Avg humidity

Guam in September average weather

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Torrential rain shower
29°
2
Moderate or heavy rain shower
29°
3
Patchy light rain with thunder
29°
4
Patchy rain possible
30°
5
Patchy light rain with thunder
30°
6
Patchy light rain with thunder
30°
7
Patchy rain possible
30°
8
Moderate or heavy rain shower
30°
9
Moderate or heavy rain shower
29°
10
Moderate or heavy rain shower
28°
11
Torrential rain shower
28°
12
Moderate rain at times
28°
13
Thundery outbreaks possible
28°
14
Moderate rain at times
29°
15
Moderate or heavy rain shower
28°
16
Patchy light rain with thunder
28°
17
Thundery outbreaks possible
29°
18
Moderate or heavy rain shower
29°
19
Patchy rain possible
29°
20
Patchy rain possible
29°
21
Patchy rain possible
29°
22
Moderate rain
30°
23
Patchy rain possible
29°
24
Patchy rain possible
30°
25
Patchy rain possible
29°
26
Moderate rain
28°
27
Patchy rain possible
28°
28
Cloudy
29°
29
Patchy rain possible
29°
30
Patchy rain possible
29°
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Temperatures trend during September in Guam

See the weather trend as well as the moving average line
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September weather day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Torrential rain shower
Torrential rain shower
 29° /26° 78.9 mm 6
2 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 29° /26° 27.9 mm 6
3 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 29° /27° 8.4 mm 6
4 Sept. Patchy rain possible
Patchy rain possible
 30° /27° 3.9 mm 7
5 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 30° /27° 7.3 mm 6
6 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 30° /26° 14.9 mm 7
7 Sept. Patchy rain possible
Patchy rain possible
 30° /27° 5.1 mm 7
8 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 30° /27° 18.3 mm 7
9 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 29° /27° 27.5 mm 6
10 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 28° /25° 55.4 mm 6
11 Sept. Torrential rain shower
Torrential rain shower
 28° /25° 40.9 mm 6
12 Sept. Moderate rain at times
Moderate rain at times
 28° /26° 40.2 mm 6
13 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 28° /25° 30.2 mm 6
14 Sept. Moderate rain at times
Moderate rain at times
 29° /26° 9.7 mm 6
15 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 28° /26° 30.9 mm 6
16 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 28° /26° 52.8 mm 6
17 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 29° /26° 16.8 mm 6
18 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 29° /27° 20.9 mm 6
19 Sept. Patchy rain possible
Patchy rain possible
 29° /27° 4.9 mm 11
20 Sept. Patchy rain possible
Patchy rain possible
 29° /28° 3.2 mm 11
21 Sept. Patchy rain possible
Patchy rain possible
 29° /27° 2.6 mm 11
22 Sept. Moderate rain
Moderate rain
 30° /27° 9.6 mm 11
23 Sept. Patchy rain possible
Patchy rain possible
 29° /27° 0.9 mm 11
24 Sept. Patchy rain possible
Patchy rain possible
 30° /27° 4 mm 6
25 Sept. Patchy rain possible
Patchy rain possible
 29° /27° 0.4 mm 6
26 Sept. Moderate rain
Moderate rain
 28° /27° 5.9 mm 6
27 Sept. Patchy rain possible
Patchy rain possible
 28° /27° 0.2 mm 6
28 Sept. Cloudy
Cloudy
 29° /26° 0.1 mm 6
29 Sept. Patchy rain possible
Patchy rain possible
 29° /27° 0.9 mm 6
30 Sept. Patchy rain possible
Patchy rain possible
 29° /28° 3.4 mm 6
Next
Important Notice
Our weather forecast for Guam in September 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 forecast closer to your planned date for the most up-to-date weather information.

Guam in September - FAQ

What are the expected maximum and minimum temperatures in Guam during September?
During September, expect a variety of temperatures with highs around 29° and lows near 27°, suitable for diverse activities and preferences.
How much rainfall should be expected in Guam during September?
Significant rainfall exceeding 569.6 mm is expected in Guam during September, occurring over more than 29 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Guam during September?
The average wind speed in Guam during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Guam in September?

As you prepare for your trip to Guam in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Guam, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Lightweight Clothing: T-shirts, blouses, shorts, skirts
    • Rain Gear: Lightweight, waterproof clothing
  • Footwear
    • Waterproof Shoes
    • Sandals/Flip-flops: Comfortable for warm climates
  • Accessories
    • Sunglasses: For sun protection
    • Sun Hats: Wide-brimmed hats for sun protection in warm weather
    • Umbrellas/Raincoats: For rainy days
  • Personal Items
    • Sunscreen: High SPF for sunny destinations
    • Lip Balm with SPF: To protect against chapped lips
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Location coordinates Where is Guam?

Get accurate weather forecasts for Guam, located at latitude 13.518 and longitude 144.839. Stay updated with localized weather information tailored for Guam.

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