Climate averages 1991–2020

Honolulu weather
in October.

A warm, fairly dry month: the joint 3rd warmest and the 7th driest of the year. Meets the pleasant-weather rule

Long-term climate patterns, not a forecast for a particular trip.

Average high 27.3°C Daytime mean, October

Average low 24.2°C Night-time mean, October

Rainfall 20 mm 3 days with ≥1 mm

Daylight 12 h Sunrise to sunset, per day

October is a warm month in Honolulu: daytime highs average 27.3°C and nights cool to about 24.2°C. By daytime temperature it is the joint 3rd warmest of the 12 months.

Expect about 20 mm of rain on roughly 3 days, which makes October a fairly dry month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 40 min on an average October day.

Among the 498 cities listed in the United States, Honolulu ranks joint 45th of 498 for the warmest October highs and joint 68th of 498 for the driest October (rainfall, lowest first). The mean October high of those 498 cities is 21.4°C; Honolulu is 6.0°C warmer than that mean.

From October to November, average highs fall by 1.3°C to 26.1°C, and monthly rainfall rises from 20 mm to 40 mm.

The annual picture

October in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Honolulu climate table

1991–2020

Monthly climate averages for Honolulu, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	24.3°C21.3°C	21.3°C	37	4.9	11.011 h
February	24.1°C21.0°C	21.0°C	29	4.5	11.411 h
March	24.3°C21.2°C	21.2°C	39	4.4	12.012 h
April	25.0°C21.9°C	21.9°C	11	2.4	12.613 h
May	26.0°C22.7°C	22.7°C	13	2.2	13.113 h
June	26.8°C23.6°C	23.6°C	8.0	1.1	13.413 h
July	27.3°C24.1°C	24.1°C	5.9	1.0	13.313 h
August	27.7°C24.5°C	24.5°C	9.9	1.8	12.913 h
September	27.8°C24.5°C	24.5°C	10	2.2	12.312 h
October, selected	27.3°C24.2°C	24.2°C	20	2.9	11.712 h
November	26.1°C23.4°C	23.4°C	40	4.9	11.111 h
December	25.0°C22.3°C	22.3°C	47	5.1	10.911 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Honolulu) is explained once on the Honolulu year overview and on the Sources, method and limits page.