Guam Weather in June
Guam in June sees high temperatures, with highs around 30°C (86°F) and overnight lows of 27°C (81°F). Rainfall is fairly high at around 161 mm (6.3 in) on average, so pack waterproofs just in case.
Rainfall in Guam in June
This month experiences about 17 days of rain according to historical data, averaging 161 mm (6.3 in). Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Guam in June
Temperatures in Guam in June top out at 30°C (86°F) and drop to 27°C (81°F) overnight. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 27°C (81°F) overnight, the heat doesn't let up much after dark. If you're staying somewhere without air conditioning, a cold shower before bed and keeping the air moving can help.
Sunshine in Guam in June
The month enjoys around 196 hours of sunshine, creating mostly sunny days with good weather conditions.Should you favor a climate that's both dry and comfortably warm, January, February, March, April and May typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Micronesia, check out our Guam's climate page.
Guam Temperature in June
Min Temperature
27°C (81°F)
Max Temperature
30°C (86°F)
Chance of Rain
57%
Precipitation
161 mm (6.3 in)
Rainy days
17 days
Sunshine
196 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Guam typically stay consistent throughout June, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in June
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in June
Historical weather for Guam in June
Browse day-by-day weather records for Guam spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Guam historical weather extremes in June
Our historical data for Guam spans 1976 to 2026, revealing these weather extremes.
- The hottest June day on record in Guam reached 34°C (93°F) (June 9, 1976).
- Guam experienced its chilliest June day on June 4, 1995, reaching only 26°C (79°F).
- The coldest night in June in Guam was on June 24, 2010, with a minimum of 22°C (72°F).
Best Places in Micronesia in June
Find out more about the weather in Micronesia and which places have the best travel conditions in this month. See all of Micronesia in June →
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What to Wear in Guam in June
Warm but pleasant conditions in Guam in June. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Guam in June
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Micronesia, check out our Guam's climate page.
See the full Guam climate overview or explore weather in Micronesia.
