Climate averages 1991–2020

Lower Hutt weather
in September.

A cool, moderately wet month: the 9th warmest and the 8th driest of the year.

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

Average high 13.0°C Daytime mean, September
Average low 8.8°C Night-time mean, September
Rainfall 76 mm 12 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Lower Hutt · average highYear overview

September is a cool month in Lower Hutt: daytime highs average 13.0°C and nights cool to about 8.8°C. By daytime temperature it is the 9th warmest of the 12 months.

Expect about 76 mm of rain on roughly 12 days, which makes September a moderately wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 47 min on an average September day.

The nearest other city in this atlas is Wellington (14 km away). In September its highs average 12.3°C, 0.7°C cooler than Lower Hutt, with 74 mm of rain.

Among the 11 cities listed in New Zealand, Lower Hutt ranks 9th of 11 for the warmest September highs and 5th of 11 for the driest September (rainfall, lowest first). The mean September high of those 11 cities is 13.8°C; Lower Hutt is 0.8°C cooler than that mean.

From September to October, average highs rise by 1.4°C to 14.4°C, and monthly rainfall rises from 76 mm to 88 mm.

The annual picture

September in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. 510152025 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 1000

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

Every month, side by side

Lower Hutt climate table

1991–2020
Monthly climate averages for Lower Hutt, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 19.5°C14.6°C14.6°C588.414.815 h
February 19.9°C14.9°C14.9°C567.413.714 h
March 18.5°C13.6°C13.6°C598.212.412 h
April 16.3°C11.9°C11.9°C699.611.011 h
May 14.3°C10.4°C10.4°C7010.49.910 h
June 12.3°C8.5°C8.5°C8812.19.39 h
July 11.5°C7.6°C7.6°C8412.29.510 h
August 11.8°C7.7°C7.7°C8013.110.510 h
September, selected 13.0°C8.8°C8.8°C7611.811.812 h
October 14.4°C10.0°C10.0°C8811.913.213 h
November 15.8°C11.1°C11.1°C7310.714.414 h
December 17.9°C13.3°C13.3°C6810.815.115 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.

Compare places

September in nearby cities

Distance from Lower Hutt

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 Lower Hutt) is explained once on the Lower Hutt year overview and on the Sources, method and limits page.