Grafton in Summer
In summer (December, January and February), Grafton sees average daytime highs around 28°C and overnight lows near 19°C, with 342 mm of rain over about 37 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 28°C. The sky is clear or mostly clear about 31% of the time across summer, and the air most often feels muggy.
Summer is Grafton's weakest season of the year to visit on our travel score. For the whole year in context, see Grafton's year-round climate.
- Avg daytime high
- 28°C
- warmest season of the year
- Avg overnight low
- 19°C
- Rainfall
- 342 mm
- 37 wet days
- Avg wind
- 9 km/h
- Travel score
- 5.7
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Grafton in Summer
Across summer, daytime highs hold fairly steady around 28°C.
A typical summer day in Grafton reaches about 28°C and drops to 19°C overnight. The warmest of the three months is January, the coolest December.
Grafton weather by month
How the three summer months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 29° / 20° | 114 | 12.5 | 13.7 | 5.5 |
| Feb | 28° / 20° | 114 | 11.8 | 13.1 | 5.7 |
| Mar | 27° / 18° | 99 | 13.2 | 12.2 | 6.3 |
| Apr | 24° / 15° | 47 | 8.8 | 11.3 | 7.3 |
| May | 22° / 11° | 56 | 6.6 | 10.5 | 7.4 |
| Jun | 19° / 9° | 58 | 6.1 | 10.1 | 7.1 |
| Jul | 19° / 8° | 27 | 4.2 | 10.3 | 7.5 |
| Aug | 21° / 8° | 36 | 4.4 | 10.9 | 7.9 |
| Sep | 23° / 11° | 32 | 5.6 | 11.8 | 8.1 |
| Oct | 25° / 14° | 61 | 7.9 | 12.7 | 7.4 |
| Nov | 27° / 16° | 84 | 11.2 | 13.5 | 6.4 |
| Dec | 28° / 18° | 115 | 12.5 | 13.9 | 5.9 |
Cloud cover in Summer
The sky is clear or mostly clear about 31% of the time across summer.
Chance of precipitation in Summer
Grafton gets around 342 mm of rain over 37 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 9 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 48 min in early December to 12 h 42 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 6.1 kWh/m².
Hazard calendar for Grafton
In summer, Grafton overlaps its cyclone and rainy season season. The full year is below, with each hazard's peak months called out.
Grafton sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Grafton's rainy season runs October–March, when most of the year's rain falls.
Is summer a good time to visit Grafton?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Grafton for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Grafton in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Grafton sees daytime highs around 28°C and nights near 19°C. Pack light clothes and sun protection. Worth having: rain gear. About 37 days see rain.
Sea temperature near Grafton in Summer
The nearest coast averages about 25°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 43 km away) is warmest in February at about 26°C and coldest in August near 20°C.
It's comfortable for a long swim from Aug 27 to Aug 9 — about 11.4 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 25 | 26 | 25 | 25 | 23 | 22 | 20 | 20 | 20 | 21 | 22 | 24 |
| Comfort | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Refreshing | Cool | Refreshing | Refreshing | Refreshing | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 25 | Warm |
| Feb | 26 | Warm |
| Mar | 25 | Warm |
| Apr | 25 | Warm |
| May | 23 | Refreshing |
| Jun | 22 | Refreshing |
| Jul | 20 | Refreshing |
| Aug | 20 | Cool |
| Sep | 20 | Refreshing |
| Oct | 21 | Refreshing |
| Nov | 22 | Refreshing |
| Dec | 24 | Refreshing |
UV index in Grafton in Summer
Clear-sky midday UV across summer averages around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Grafton peaks around January 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 4 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 14 | 13 | 11 | 7 | 5 | 3 | 4 | 5 | 7 | 9 | 11 | 13 |
| Level | Extreme | Extreme | Extreme | Very high | Moderate | Moderate | Moderate | High | High | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 13 | Extreme |
| Mar | 11 | Extreme |
| Apr | 7 | Very high |
| May | 5 | Moderate |
| Jun | 3 | Moderate |
| Jul | 4 | Moderate |
| Aug | 5 | High |
| Sep | 7 | High |
| Oct | 9 | Very high |
| Nov | 11 | Extreme |
| Dec | 13 | Extreme |
Air quality in Grafton in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Grafton is worst in November — around 37 µg/m³ PM2.5 (poor), about 8.5× the cleanest month (April, 4 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 8 | 7 | 7 | 4 | 5 | 5 | 6 | 18 | 17 | 15 | 37 | 16 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Poor | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 7 | Good |
| Mar | 7 | Good |
| Apr | 4 | Good |
| May | 5 | Good |
| Jun | 5 | Good |
| Jul | 6 | Good |
| Aug | 18 | Moderate |
| Sep | 17 | Moderate |
| Oct | 15 | Moderate |
| Nov | 37 | Poor |
| Dec | 16 | Moderate |
Where is Grafton?
Grafton sits at 29.7°S, 152.9°E, 7 m above sea level, in Australia. The nearest listed city is Coffs Harbour, 71 km away.
Topography around Grafton
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Grafton.
Within 3 km, the terrain around Grafton has only modest variations in elevation — a maximum elevation change of 33 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 178 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,436 m.
The land around Grafton is covered by grassland (58%) within 3 km, trees (46%) and grassland (43%) within 16 km, and trees (65%) and water (20%) within 80 km.
Australia travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type I
- 230 V · 50 Hz
- Prices
- ≈ 90% of US
- price level, 2025
- GDP per capita
- $65,130
- 2025
- Happiness
- 6.9 / 10
- World Happiness, 2025
- Homicide rate
- 0.9
- per 100k, 2023
- Road deaths
- 4.9
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Grafton (-29.681°, 152.9339°, elevation 7 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.