Tumon in September

Typhoon season; heavy rain.

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

September is rated mixed. These months rate higher:

• JanuaryGreatDry season; comfortable and busy.
• FebruaryGreatDry; Lunar New Year crowds.
• MarchGreatDry, warming.
• AprilGreatDry; good month.

• TumonHighs around 31 °C (88 °F), lows around 25 °C (77 °F), rain on about 23 daysHighs around 88 °F (31 °C), lows around 77 °F (25 °C), rain on about 23 days
• Guam, Guam · Tumon, Hagåtña, the south and the north plateaustorm or typhoon risk

  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.

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.

• Typhoon season check

  Jul–Nov · Island-wide

  Storms can close beaches, roads and flights.

• Chuseok (Korea)

  Sep–Oct (lunar) · Guam

  Short surge of Korean visitors; Tumon hotels fill.

Crowds · Guam overall

Low

Prices · Guam overall

Low

Guam overall: Heavy showers and typhoon risk; low prices outside Chuseok.

Weather, crowds and prices for any two months in Tumon, side by side.

• Light, breathable clothes, a sun hat and sunscreen
• A rain jacket or umbrella and shoes that dry fast
• A spare day in the plan: storms can cancel flights and ferries

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