Mount Gambier Weather and Climate
Climate Snapshot
Mount Gambier's warmest month in 2024 was March, averaging 24.5 degrees. That gives Mount Gambier an annual average daytime high of 18.8 degrees, 4.1 degrees cooler than the South Australia mean.
Daytime highs peak at 24.5 degrees in March and bottom out with overnight lows of 5.1 degrees in June. That is a 19.4 degree spread from hottest afternoon to coldest night. Overnight minimums average 9.5 degrees across the year, 2.7 degrees colder than the South Australia average of 12.2.
Annual rainfall totals 627mm across 112 rain days, 71 percent wetter than the South Australia average. The wettest month is July at 92mm, and February is the driest at 2mm.
Rainfall varies dramatically through the year. The wettest month (July) gets over 54 times as much rain as the driest (February).
When we crunch the numbers on temperature, humidity, UV, and rainfall, January comes out as the sweet spot with a Comfort Score of 10.0 out of 10. July sits at the other end at 1.0.
The full data table below breaks it all down month by month. If you're in a hurry, January is your best bet.
Monthly Comfort Score
Our Comfort Score rates each month from 1 (tough) to 10 (ideal) based on temperature, humidity, rainfall, UV, and sunshine. How we calculate it
Annual Comfort Score: 5.9/10 - Ranked #142 of 213 Australian cities (national avg 6.2, SA avg 6.5)
Seasonal Overview
| Season | Avg Max °C | Avg Min °C | Total Rain mm | Comfort |
|---|---|---|---|---|
| Summer | 23.7 | 12.4 | 121 | 10.0 |
| Autumn | 19.7 | 9.7 | 58 | 6.6 |
| Winter | 14.0 | 6.5 | 220 | 1.8 |
| Spring | 17.9 | 9.3 | 229 | 5.4 |
Monthly Climate Averages
| Month | Max °C | Min °C | Rain mm | Rain Days | Solar MJ | Humidity % | Comfort |
|---|
Weather by Month
Detailed climate data, packing advice, and what to expect for each month in Mount Gambier.
23.7°C, 70mm rain February
24.4°C, 2mm rain March
24.5°C, 8mm rain April
17.4°C, 33mm rain May
17.2°C, 16mm rain June
13.2°C, 46mm rain July
12.9°C, 92mm rain August
16.0°C, 82mm rain September
14.8°C, 78mm rain October
18.1°C, 68mm rain November
20.9°C, 83mm rain December
23.0°C, 50mm rain
Compare and Explore
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