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When to go · Sanmu

Sanmu in August

Great month. Inside Sanmu's best window: Mar–Apr for strawberries, Jul–Aug for surf; also May–Jun for milder beach weather.

Key facts

Verdict
Great
Temperature
30°C (86°F) / 23°C (73°F)
average high / low
Rain days
9
Crowds
High
Japan overall
Prices
High
Japan overall

Verdict

GreatBest and avoid months for Sanmu

Inside Sanmu's best window: Mar–Apr for strawberries, Jul–Aug for surf; also May–Jun for milder beach weather.

Is another month better than August?

No other month rates higher than August for Sanmu in this guide.

Weather in August

Long-term averages
  • SanmuHighs around 30 °C (86 °F), lows around 23 °C (73 °F), rain on about 9 days

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.

  • Obon big impact

    About 13–16 Aug · Japan

    Family travel peak; Shinkansen and expressways jammed; some small shops close.

Crowds and prices

Crowds · Japan overall
High
Prices · Japan overall
High

Japan overall: Hottest month and Obon travel peak: go north (Hokkaidō, Tōhoku) or plan short outdoor windows.

High-price month: see what to book ahead.

Compare two months

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

  • Verdict

    Aug: Great

    Mar: Great

  • Daytime high

    Aug: 30 °C (86 °F)

    Mar: 14 °C (57 °F)

  • Night low

    Aug: 23 °C (73 °F)

    Mar: 5 °C (41 °F)

  • Rain days

    Aug: 9

    Mar: 6 (better)

  • Crowds

    Aug: High

    Mar: High

  • Prices

    Aug: High

    Mar: High

  • Festivals listed

    Aug: 1

    Mar: 1

August: Inside Sanmu's best window: Mar–Apr for strawberries, Jul–Aug for surf; also May–Jun for milder beach weather.

March: Inside Sanmu's best window: Mar–Apr for strawberries, Jul–Aug for surf; also May–Jun for milder beach weather.

Sanmu: figures are long-term averages from this guide, not a forecast.

What to pack

  • Light, breathable clothes, a sun hat and sunscreen

Build the full packing list for your trip →

Across Japan in August →