Weather in Guam in October 2025
- October is usually the wettest month of the year in Guam;
Average weather
Average temperature in Guam in October
The expected average maximum temperature in October is +88°F with a maximum of +90°F and a minimum of +73°F.
The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +88°F to +88°F.
Is Guam warm or cold in October?
Guam is typically warm in October.
Maximum temperatures go up compared to the previous month from +84°F to +84°F. The minimum temperature also goes up from +79°F to +79°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how October is compared to other months in Guam:
Climate in Guam in October
| September | October | November | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +84°F | +84°F | +84°F | ||||
| Min. temperature | ||||||
| +73°F | +72°F | +73°F | ||||
| Max. temperature | ||||||
| +93°F | +91°F | +91°F | ||||
| Rainfall | ||||||
| 403 mm | 385 mm | 238 mm | ||||
| Wind | ||||||
| 2 m/s | 3 m/s | 4 m/s | ||||
| Humidity | ||||||
| 84% | 84% | 82% | ||||
| Air pressure | ||||||
| 1008 HPa | 1008 HPa | 1009 HPa | ||||
| Sunny days | ||||||
| 0 | 0 | 1 | ||||
| Cloudy days | ||||||
| 0 | 1 | 1 | ||||
| Rainy days | ||||||
| 28 | 29 | 28 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
October weather is still as ok as in September. The temperature levels stay the same in the area of +84°F for average maximum temperature during the day. As October arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 403 mm to 385 mm. Humidity levels don’t change as the month goes on, averaging around 84%. Winds are stronger in comparison to September, going up from 2 m/s to 3 m/s on average. The amount of sunny days stay about the same, averaging 0 sunny days during the month.
November brings much the same weather, it remains ok.
Wind
The average wind speed is 4 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Guam is gradually increasing during October, going from 2 m/s to 4 m/s over the course of the month.
Rain
How was the weather last October in Guam?
Climate Change Over the Years
The climate in Guam in October has not changed that much over the last 43 years.
The average temperature was the lowest in 1983 (+80°F) and the highest in 2018 (+88°F). The driest year was 1983 with only 1154 mm of rainfall, and the wettest year was 2023 with 4623 mm.
FAQ
Is October a good time to visit Guam?
Can you sunbathe in Guam in October?
Is Guam rainy in October?
Is it sunny in Guam in October?
Monthly weather in Guam
Source of the data
For this page, we’ve looked at the typical weather in Guam, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
