Guam (Marianas) in august: average Weather, Temperature and Climate
Weather in Guam (Marianas) in august 2025
The weather in Marianas in the month of august comes from statistical datas on the past years. You can view the weather statistics the entire month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout august
very bad weather UV index: 7
Weather at 6am
85°F
Moderate rain at times
42% of time
22%
21%
12%
Weather at 12pm
86°F
Moderate rain at times
39% of time
23%
22%
13%
Weather at 6pm
85°F
Moderate rain at times
44% of time
21%
20%
11%
Weather at 3am
85°F
39%
34%
17%
7%
Evolution of daily average temperature and precipitation in Guam (Marianas) in august
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Guam (Marianas) in august.
The climate of Guam (Marianas) in august is very bad
The weather in august in Marianas is wet (with 19.8in of rainfall over 22 days). Unfortunately, the weather conditions is worsening than the previous month since in july there is an average of 17.6in of rainfall over 22 days.
The climate enjoyable in that area august. Temperatures are up to 86°F. In the morning the temperature drops to 85°F. Thus, the mean temperature average on this month of august in Marianas is 85°F. These temperatures are far removed from those records observed in Marianas in august with a maximum record of 90°F in 2021 and a minimum record of 77°F in 2021. You can hope to have 86°F or more for all the month.
Day length in Marianas in august is 12:34. Sunrise is at 06:08 and sets at 18:42.
August: another location in Micronesia?
If you want to go to Micronesia in august, there are destinations with better weather than Guam (Marianas):
In august, Nauru has good weather.
Finally, Chuuk Lagoon (Caroline Islands), Kosrae Island and Palaos have a tolerable climate, but better than Guam (Marianas).
Seasonal average climate and temperature of Guam (Marianas) in august
Check below seasonal norms These statistics are set from the weather statements earlier years of the month of august.
| August | |||||
| Outside temperature | |||||
| Average temperature | 85°F | ||||
| Highest temperature | 86°F | ||||
| Lowest temperature | 85°F | ||||
| Highest record temperature | 90°F (2021) | ||||
| Lowest record temperature | 77°F (2021) | ||||
| Number of days at +86°F | 10 day(s) (32%) | ||||
| Number of days at +65°F | 31 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 86°F | ||||
| Lowest sea temperature | 85°F | ||||
| Highest sea temperature | 87°F | ||||
| Wind | |||||
| Wind speed | 19km/h | ||||
| Wind temperature | 85°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 19.8in | ||||
| Number of days with rainfall | 22 day(s) (71%) | ||||
| Record daily rainfall | 7.9in (2015) | ||||
| Other climate data | |||||
| Humidity | 78% | ||||
| Visibility | 8.7km | ||||
| Cloud cover | 46% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:08 | ||||
| Time of sunset | 18:42 | ||||
| Length of day | 12:34 | ||||
| Our opinion about the weather in august | |||||
| Our opinion at whereandwhen.net | very bad | ||||
How was the weather last august?
Here is the day by day recorded weather in Guam (Marianas) in august 2024:
83°F to 86°F
79°F to 83°F
79°F to 83°F
81°F to 83°F
81°F to 85°F
81°F to 85°F
81°F to 86°F
83°F to 86°F
81°F to 85°F
83°F to 85°F
81°F to 85°F
81°F to 86°F
81°F to 86°F
83°F to 85°F
83°F to 86°F
83°F to 85°F
79°F to 85°F
83°F to 86°F
81°F to 86°F
83°F to 85°F
81°F to 86°F
81°F to 83°F
83°F to 86°F
81°F to 86°F
81°F to 86°F
81°F to 85°F
83°F to 86°F
83°F to 86°F
83°F to 86°F
83°F to 86°F
81°F to 86°F
Map: other cities in Micronesia in august
Cities near Guam (Marianas):
| Yap islands in august | bad weather |
| Chuuk Lagoon (Caroline Islands) in august | tolerable weather |
| Palaos in august | tolerable weather |
| Palikir in august | bad weather |
| Pohnpei in august | bad weather |
| Kosrae Island in august | tolerable weather |
| Nauru in august | good weather |
| Marshall islands in august | bad weather |
Click over cities on the map for information about the weather in august.
Guam
(Marianas)
perfect weather
good
tolerable
bad
very bad
Weather data for Guam (Marianas) in august:
Weather data for Guam (Marianas) for august are derived from an average of the weather forecast since 2009 in Guam (Marianas). There is a margin of error and these forecasts are to be considered as general information only. The weather in Guam (Marianas) can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Guam (Marianas).