Guam weather in January 2026
January
Guam weather in January 2026
January
Day
30 °C
Night
24 °C
Sea
28 °C
Precipitation
91 mm
in month
Rainy days
10 days
in month
Daylight
11 hours
average
Sunshine
6 hours
average
Humidity
84 %
Day
30 °C
Night
24 °C
Sea
28 °C
Precipitation
91 mm
in month
Rainy days
10 days
in month
Daylight
11 hours
average
Sunshine
6 hours
average
Humidity
84 %
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Weather overview and FAQs
Weather overview
In Guam in January, the average air temperature ranges from 30 °C (86 °F) during the day to 24 °C (75 °F) at night. There are 10 days of rain on average, where the rainfall is 91 mm (3.57 in).
Is January a good month to visit Guam?
In January in Guam, there are ideal conditions for a vacation. The temperature during the day will be nice 30 °C (86 °F). The temperature of the sea will be perfect at 28 °C (82 °F). At night, temperatures hover around a pleasant 24 °C (75 °F).
What temperature can I expect during the day in January in Guam?
In January in Guam, the average daily temperatures will be 30 °C (86 °F). The ideal temperature for enjoying sunbathing by the water and a good temperature for other activities. For some people, it will be too hot in the direct sunlight and the stay may not be so pleasant. Don't forget to pack flip-flops, sunscreen, and a hand fan if necessary - it may come in handy.
What is the sea temperature in January in Guam?
The temperature of the sea in Guam in January is 28 °C (82 °F). Seems like an ideal temperature for swimming, you can stay in the sea for a long time and enjoy it as well.
How heavy is the precipitation in January in Guam?
There is precipitation of 91 mm (3.57 in) in January in Guam, which means 3 mm (0.12 in) rainfall per day on average.
What is the average number of rainy days in January in Guam?
In Guam in January, we can expect 10 days to be rainy, that is, days when precipitation exceeds 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 2.4 days of the week, or in general - 35 % days.
What is the night temperature in Guam in January?
The average night temperature in Guam in January is 24 °C (75 °F). A very pleasant temperature for long evening walks, fun over a drink outside, or doing sports in the morning. If possible, look for a hotel with air conditioning.
Is it hot in January in Guam?
In January in Guam, you will enjoy nice warm weather, but it will also be pleasant and you probably won't feel hot.
Is the sea in Guam warmer in January than in February?
No, the sea is not warmer in Guam in January than in February.
Is Guam rainier in January than in February?
Yes, Guam is a rainier January than in February.
How many sunny hours can I expect in January in Guam?
There is an average length of sunshine of 6 hours per day in Guam in January.
How long is the day (from dawn till dusk) in Guam in January?
The length of daylight in Guam in January is 11 hours.
How humid is Guam in January?
In Guam in January, expect humidity around 84 %. This humidity is rather above average, but except for sensitive individuals, it should not be a problem.
How windy is Guam in January?
In January in Guam, there will be an average wind scale of 6.
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