Skip to content
Voykit

When to go · Tumon

Tumon in December

Good month. Drier; Christmas and New Year are busy.

Key facts

Verdict
Good
Temperature
30°C (86°F) / 24°C (75°F)
average high / low
Rain days
17
Crowds
High
Guam overall
Prices
High
Guam overall

Verdict

GoodVoykit month rating for Tumon

Drier; Christmas and New Year are busy.

All twelve months in one grid — weather, crowds and prices, with gaps left as unknown.

Is another month better than December?

December is rated good. These months rate higher:

Weather in December

Long-term averages
  • TumonHighs around 30 °C (86 °F), lows around 24 °C (75 °F), rain on about 17 days
  • Guam, Guam · Tumon, Hagåtña, the south and the north plateaufine

    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.

Early dry season season

Drier, festive, busy.

Watch: Book early; peak prices.

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.

  • Christmas and New Year

    25 Dec – 1 Jan · Island-wide

    Peak season; book early.

Crowds and prices

Crowds · Guam overall
High
Prices · Guam overall
High

Guam overall: Trade winds return; Christmas and New Year prices.

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

    Dec: Good

    Jan: Great (better)

  • Daytime high

    Dec: 30 °C (86 °F)

    Jan: 30 °C (86 °F)

  • Night low

    Dec: 24 °C (75 °F)

    Jan: 24 °C (75 °F)

  • Rain days

    Dec: 17

    Jan: 15 (better)

  • Crowds

    Dec: High

    Jan: High

  • Prices

    Dec: High

    Jan: High

  • Festivals listed

    Dec: 1

    Jan: 3

December: Drier; Christmas and New Year are busy.

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

Build the full packing list for your trip →

Across Guam in December →