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When to go · Avarua

Avarua in September

Great month. Dry, warm sea.

Key facts

Verdict
Great
Temperature
26°C (79°F) / 19°C (66°F)
average high / low
Rain days
8
Crowds
Medium
Cook Islands overall
Prices
Medium
Cook Islands overall

Verdict

GreatVoykit month rating for Avarua

Dry, warm sea.

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

Is another month better than September?

No other month rates higher than September for Avarua in this guide.

Weather in September

Long-term averages
  • AvaruaHighs around 26 °C (79 °F), lows around 19 °C (66 °F), rain on about 8 days

Dry season season

Cooler, drier weather; the more reliable window for outdoor plans.

Watch: Evenings can feel cool enough for a light layer.

Whale season season

Humpback whales pass near Rarotonga; whale-watching tours run in season.

Watch: Sightings are not guaranteed; ask the operator about their season so far.

Crowds and prices

Crowds · Cook Islands overall
Medium
Prices · Cook Islands overall
Medium

Cook Islands overall: Dry and calm; whales.

Compare two months

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

  • Verdict

    Sep: Great

    Apr: Great

  • Daytime high

    Sep: 26 °C (79 °F)

    Apr: 28 °C (82 °F)

  • Night low

    Sep: 19 °C (66 °F)

    Apr: 22 °C (72 °F)

  • Rain days

    Sep: 8 (better)

    Apr: 11

  • Crowds

    Sep: Medium

    Apr: Medium

  • Prices

    Sep: Medium

    Apr: Medium

  • Festivals listed

    Sep: 0

    Apr: 1

September: Dry, warm sea.

April: Drier; a good shoulder month.

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

What to pack

Nothing unusual for the weather this month.

Build the full packing list for your trip →

Across Cook Islands in September →