Guam weather in September (Micronesia)

Planning a trip to Guam in September? Here's what the weather might have in store during this month.

In September, Guam typically experiences high temperatures and heavy rainfall. Daytime temperatures hover around 30°C, while nights can cool down to about 26°C. Remember, these are typical temperatures, and certain days could be even hotter. Ensure you wear appropriate clothing to handle the warmth.

Guam in September falls under the rainy season with heavy rainfall, averaging around 338 mm for the month. Delving into the climate records from the past 30 years, one can predict that nearly 19 days of the month will see rainfall.

The area enjoys a balanced 133 hours of sunlight. Ensuring it's neither too overcast nor too sunny.

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Guam. January, February, March, April and May typically offer the best circumstances. While July, August, September and October tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Guam climate page with graphs.

 

Guam, monthly averages in September

Min TemperatureMin Temperature 26°C  
Max TemperatureMax Temperature 30°C  
Chance of RainChance of Rain 63%  
PrecipitationPrecipitation 338 mm  
Rainy daysRainy days 19 days  
SunshineSunshine 133 hours  
Percentage SunshinePercentage Sunshine  

Where to go in Micronesia in September

Find out more about the weather in Micronesia in September and which places have the best weather conditions in this month.

Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Guam in September?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Swimming
7/10
Cycling
7/10
Walking
7/10
Camping
7/10
Outdoor sports
7/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Guam.

Our site offers climate and forecast data for every country in the world. Are you going to Micronesia? On this website you can find historical weather averages for many cities in Micronesia. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.