Grafton Weather and Climate
Climate Snapshot
Grafton's warmest month in 2024 was December, averaging 30.2 degrees. That gives Grafton an annual average daytime high of 25.2 degrees, 2.9 degrees warmer than the New South Wales mean.
Daytime highs peak at 30.2 degrees in December and bottom out with overnight lows of 9.1 degrees in June. That is a 21.1 degree spread from hottest afternoon to coldest night. Overnight minimums average 15.4 degrees across the year, 2.9 degrees warmer than the New South Wales average of 12.5.
Annual rainfall totals 1,018mm across 132 rain days, close to the New South Wales average. The wettest month is November at 160mm, and July is the driest at 33mm.
Rainfall varies moderately through the year, with some months noticeably wetter than others, but there's no single dominant wet season.
By our reckoning, September (9.5/10) is when the weather is at its finest, while January (5.6/10) is the toughest month to be outdoors.
Scroll down for the full month-by-month breakdown, or jump straight to September if you're picking the best time to visit Grafton.
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: 7.4/10 - Ranked #14 of 213 Australian cities (national avg 6.2, NSW avg 6.4)
Seasonal Overview
| Season | Avg Max °C | Avg Min °C | Total Rain mm | Comfort |
|---|---|---|---|---|
| Summer | 29.9 | 20.8 | 293 | 5.9 |
| Autumn | 24.5 | 15.9 | 246 | 7.8 |
| Winter | 20.5 | 9.9 | 156 | 7.3 |
| Spring | 26.0 | 15.0 | 323 | 8.5 |
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 Grafton.
29.6°C, 136mm rain February
30.0°C, 68mm rain March
26.9°C, 92mm rain April
25.1°C, 104mm rain May
21.4°C, 50mm rain June
19.5°C, 36mm rain July
19.2°C, 33mm rain August
22.9°C, 87mm rain September
24.7°C, 103mm rain October
25.7°C, 60mm rain November
27.7°C, 160mm rain December
30.2°C, 90mm rain
Compare and Explore
Similar Climates
If you like Grafton's climate, you might also consider:
Queensland - Comfort 7.4/10 Port Lincoln
South Australia - Comfort 7.4/10 Warwick
Queensland - Comfort 7.4/10 Kingaroy
Queensland - Comfort 7.4/10