Newcastle Weather and Climate
Climate Snapshot
Newcastle's warmest month in 2024 was January, averaging 27.7 degrees. That gives Newcastle an annual average daytime high of 22.5 degrees, right on the New South Wales average.
Daytime highs peak at 27.7 degrees in January and bottom out with overnight lows of 9.6 degrees in June. That is a 18.1 degree spread from hottest afternoon to coldest night. Overnight minimums average 15.7 degrees across the year, 3.2 degrees warmer than the New South Wales average of 12.5.
Annual rainfall totals 1,098mm across 144 rain days, 22 percent wetter than the New South Wales average. The wettest month is June at 183mm, and March is the driest at 40mm.
Rain is spread unevenly but not dramatically so. Expect some drier patches and some wetter ones through the year.
When we crunch the numbers on temperature, humidity, UV, and rainfall, March comes out as the sweet spot with a Comfort Score of 9.2 out of 10. June sits at the other end at 2.8.
Scroll down for the full month-by-month breakdown, or jump straight to March if you're picking the best time to visit Newcastle.
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: 7.0/10 - Ranked #48 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 | 27.2 | 20.8 | 192 | 8.0 |
| Autumn | 22.2 | 16.3 | 362 | 6.9 |
| Winter | 17.4 | 10.6 | 292 | 4.3 |
| Spring | 23.0 | 15.3 | 252 | 8.7 |
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 Newcastle.
27.7°C, 48mm rain February
27.1°C, 97mm rain March
25.2°C, 40mm rain April
22.5°C, 166mm rain May
19.0°C, 155mm rain June
16.4°C, 183mm rain July
16.4°C, 46mm rain August
19.5°C, 62mm rain September
22.0°C, 57mm rain October
21.9°C, 79mm rain November
25.0°C, 116mm rain December
26.9°C, 48mm rain
Compare and Explore
Similar Climates
If you like Newcastle's climate, you might also consider:
South Australia - Comfort 7.0/10 Mandurah
Western Australia - Comfort 7.0/10 Dalby
Queensland - Comfort 7.0/10 Stanthorpe
Queensland - Comfort 7.0/10