Warm
Average highs sit around 31°C, giving warm days by monthly-average standards.
May verdict
Tumon, Guam in May
Weather score61Good
Good for holiday weather
Average highs sit around 31°C, giving warm days by monthly-average standards. Sunshine averages 7h per day, enough for a balanced month. Rainfall averages 142mm, so some wet days are possible.
May weather
Monthly averages
Temp
31°C
Rain
142mm
Sun
7h
Sea
29°C
Weather score
61
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 142mm, so some wet days are possible.
Some sun
Sunshine averages 7h per day, enough for a balanced month.
Warm sea
Sea temperatures average 29°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Tumon, Guam with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May31°C average high
May is close to Tumon's usual daytime heat, with little temperature swing across the year.
Warmest monthsAll year
Daytime heat stays consistently warm through the year.
Rain
May142mm average rain
May sits on the drier side of Tumon's year, which helps with sightseeing and transfers.
Driest monthsJanuary to June and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
May7 hours average sun
May is one of Tumon's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsMarch to June
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
May29°C average sea
May is close to Tumon's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaMay to December
Sea temperatures are usually near 29°C in this stretch, so swimming comfort is at its strongest.
Weather score
May61 weather score
May scores above Tumon's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJanuary to June
These months have the strongest weather score in the monthly averages.
