When to go · Tumon
Tumon in May
Good month. Dry season ends; hot.
Key facts
- Verdict
- Good
- Temperature
- 31°C (88°F)88°F (31°C) / 25°C (77°F)77°F (25°C)
- average high / low
- Rain days
- 14
- Crowds
- High
- Guam overall
- Prices
- High
- Guam overall
Verdict
Dry season ends; hot.
All twelve months in one grid — weather, crowds and prices, with gaps left as unknown.
Is another month better than May?
May is rated good. These months rate higher:
Weather in May
- TumonHighs around 31 °C (88 °F), lows around 25 °C (77 °F), rain on about 14 daysHighs around 88 °F (31 °C), lows around 77 °F (25 °C), rain on about 14 days
- Guam, Guam · Tumon, Hagåtña, the south and the north plateauhot
Warm all year (26–31 °C (79–88 °F)). Dry trade-wind season January–May; rainy season July–November, when most typhoons pass. Guam lies in the zone where tropical storms form, so a storm is possible in any month.Warm all year (79–88 °F (26–31 °C)). Dry trade-wind season January–May; rainy season July–November, when most typhoons pass. Guam lies in the zone where tropical storms form, so a storm is possible in any month.
Dry season season
Calmest sea, best snorkel visibility, lowest rain.
Watch: Peak crowds and high prices in Jan–Feb.
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Golden Week (Japan) big impact
Late Apr – early May · Guam
Tumon's busiest week for Japanese visitors; book early.
Crowds and prices
- Crowds · Guam overall
- High
- Prices · Guam overall
- High
Guam overall: Hottest and still mostly dry; Golden Week early in the month. Mawar hit in May 2023, so check forecasts.
High-price month: see what to book ahead.
Compare two months
Weather, crowds and prices for any two months in Tumon, side by side.
Verdict
May: Good
Jan: Great (better)
Daytime high
May: 31 °C (88 °F)88 °F (31 °C)
Jan: 30 °C (86 °F)86 °F (30 °C)
Night low
May: 25 °C (77 °F)77 °F (25 °C)
Jan: 24 °C (75 °F)75 °F (24 °C)
Rain days
May: 14 (better)
Jan: 15
Crowds
May: High
Jan: High
Prices
May: High
Jan: High
Festivals listed
May: 1
Jan: 3
May: Dry season ends; hot.
January: Dry season; comfortable and busy.
Tumon: figures are long-term averages from this guide, not a forecast.
What to pack
- Light, breathable clothes, a sun hat and sunscreen
- A rain jacket or umbrella and shoes that dry fast