Gladstone in Summer
In summer (December, January and February), Gladstone sees average daytime highs around 28°C and overnight lows near 23°C, with 342 mm of rain over about 34 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 45% of the time across summer, and the air most often feels oppressive.
Summer is Gladstone's weakest season of the year to visit on our travel score. For the whole year in context, see Gladstone's year-round climate.
- Avg daytime high
- 28°C
- warmest season of the year
- Avg overnight low
- 23°C
- Rainfall
- 342 mm
- 34 wet days
- Avg wind
- 15 km/h
- Travel score
- 5.8
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Gladstone in Summer
Across summer, daytime highs hold fairly steady around 28°C.
A typical summer day in Gladstone reaches about 28°C and drops to 23°C overnight. The warmest of the three months is February, the coolest December.
Gladstone 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° / 24° | 114 | 11.9 | 13.3 | 5.6 |
| Feb | 29° / 24° | 131 | 12.3 | 12.8 | 5.4 |
| Mar | 28° / 22° | 83 | 8.5 | 12.2 | 6.7 |
| Apr | 26° / 20° | 51 | 5.2 | 11.5 | 7.7 |
| May | 24° / 17° | 40 | 4.5 | 10.9 | 8.2 |
| Jun | 22° / 15° | 36 | 3.8 | 10.6 | 8.1 |
| Jul | 21° / 13° | 29 | 3.1 | 10.7 | 8.2 |
| Aug | 22° / 14° | 23 | 2.8 | 11.2 | 8.5 |
| Sep | 24° / 17° | 21 | 3.2 | 11.9 | 8.7 |
| Oct | 25° / 19° | 41 | 5.3 | 12.6 | 8.1 |
| Nov | 27° / 22° | 40 | 6.3 | 13.2 | 7.4 |
| Dec | 28° / 23° | 96 | 9.8 | 13.4 | 6.5 |
Cloud cover in Summer
The sky is clear or mostly clear about 45% of the time across summer.
Chance of precipitation in Summer
Gladstone gets around 342 mm of rain over 34 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 15 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 24 min in early December to 12 h 30 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 6.6 kWh/m².
Hazard calendar for Gladstone
In summer, Gladstone overlaps its cyclone and rainy season season. The full year is below, with each hazard's peak months called out.
Gladstone sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Gladstone's rainy season runs December–March, when most of the year's rain falls.
Is summer a good time to visit Gladstone?
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 Gladstone for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Gladstone in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Gladstone sees daytime highs around 28°C and nights near 23°C. Pack light clothes and sun protection. Worth having: rain gear. About 34 days see rain.
Sea temperature near Gladstone in Summer
The nearest coast averages about 27°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in February at about 28°C and coldest in August near 20°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 27 | 28 | 27 | 25 | 23 | 21 | 20 | 20 | 22 | 23 | 25 | 27 |
| Comfort | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 28 | Warm |
| Mar | 27 | Warm |
| Apr | 25 | Warm |
| May | 23 | Refreshing |
| Jun | 21 | Refreshing |
| Jul | 20 | Refreshing |
| Aug | 20 | Refreshing |
| Sep | 22 | Refreshing |
| Oct | 23 | Refreshing |
| Nov | 25 | Warm |
| Dec | 27 | Warm |
UV index in Gladstone in Summer
Clear-sky midday UV across summer averages around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Gladstone peaks around February 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 5 (high).
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 | 15 | 12 | 10 | 7 | 5 | 6 | 7 | 9 | 11 | 12 | 13 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | High | Very high | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 15 | Extreme |
| Mar | 12 | Extreme |
| Apr | 10 | Very high |
| May | 7 | High |
| Jun | 5 | High |
| Jul | 6 | High |
| Aug | 7 | Very high |
| Sep | 9 | Very high |
| Oct | 11 | Extreme |
| Nov | 12 | Extreme |
| Dec | 13 | Extreme |
Air quality in Gladstone 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 Gladstone is worst in November — around 17 µg/m³ PM2.5 (moderate), about 4.2× the cleanest month (June, 4 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Gladstone's WHO annual average of 7.1 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 6 | 6 | 6 | 5 | 4 | 4 | 4 | 6 | 9 | 9 | 17 | 10 |
| Level | Good | Good | Good | Good | Good | Good | Good | Good | Good | Good | Moderate | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 6 | Good |
| Feb | 6 | Good |
| Mar | 6 | Good |
| Apr | 5 | Good |
| May | 4 | Good |
| Jun | 4 | Good |
| Jul | 4 | Good |
| Aug | 6 | Good |
| Sep | 9 | Good |
| Oct | 9 | Good |
| Nov | 17 | Moderate |
| Dec | 10 | Good |
Where is Gladstone?
Gladstone sits at 23.8°S, 151.3°E, 21 m above sea level, in Australia. The nearest listed city is Rockhampton, 93 km away.
Topography around Gladstone
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Gladstone.
Within 3 km, the terrain around Gladstone has only modest variations in elevation — a maximum elevation change of 124 m around an average of 12 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 326 m; within 80 km, large variations in elevation — a maximum elevation change of 955 m.
The land around Gladstone is covered by water (32%) and artificial surfaces (28%) within 3 km, trees (43%) and water (36%) within 16 km, and water (43%) and trees (37%) 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 Gladstone (-23.8485°, 151.2577°, elevation 21 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.