Honolulu
Hawaii, USA
Long-term weather forecast
Long-term weather forecast

October weather forecast and climate
Honolulu, HI

Waikiki beach viewed from above, with clear calm waters on the foot of Honolulu city, Hawaii, with the vast cityscape and mountains in the distance
Waikiki beach viewed from above, with clear calm waters on the foot of Honolulu city, Hawaii, with the vast cityscape and mountains in the distance
October is a transitional month, and it sees the rains rising to rain for an average of eleven days during the entire month with the rain gauge collecting an average of 0.8" (20.3mm). This raises the humidity to 69% but reduces the average sunshine hours per day to nine. The temperature in October reads an average between 73.4°F (23°C) and 87.8°F (31°C), a slight drop from the previous month as the cold season is approaching. This is a great time to enjoy the warm ocean waters as the temperature of the ocean is at 80.6°F (27°C). Basking and sunbathing in the warm sun is a plus.
  • Average high temperature in October: 86.7°F

The warmest month (with the highest average high temperature) is August (88.7°F).
The month with the lowest average high temperature is January (80.1°F).

  • Average low temperature in October: 73.4°F

The month with the highest average low temperature is August (75.1°F).
The coldest month (with the lowest average low temperature) is February (66.1°F).

  • Average humidity in October: 67.5%

The month with the highest relative humidity is January (73.3%).
The month with the lowest relative humidity is August (64.1%).

  • Average rainfall in October: 8.6"

The wettest month (with the highest rainfall) is March (11.5").
The driest month (with the lowest rainfall) is June (6.2").

  • Average rainfall days in October: 7.6 days

The month with the highest number of rainy days is December (9.7 days).
The month with the lowest number of rainy days is August (5.6 days).

  • Average sea temperature in October: 80°F

The best month for swimming (with the highest average sea temperature) is September (80.4°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).

  • Average daylight in October: 12.4h

The month with the longest days is June (Average daylight: 14.2h).
The month with shortest days is December (Average daylight: 11.7h).

  • Average sunshine in October: 7.9h

The month with most sunshine is July (Average sunshine: 9.9h).
The month with least sunshine is December (Average sunshine: 6.4h).

  • Average UV index in October: 9

Months with the highest UV index are June, July and August (UV index 12).
The month with the lowest UV index is December (UV index 6).

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