Deception Bay in Summer
In summer (December, January and February), Deception Bay sees average daytime highs around 28°C and overnight lows near 21°C, with 388 mm of rain over about 39 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 36% of the time across summer, and the air most often feels muggy.
Summer is Deception Bay's weakest season of the year to visit on our travel score. For the whole year in context, see Deception Bay's year-round climate.
- Avg daytime high
- 28°C
- warmest season of the year
- Avg overnight low
- 21°C
- Rainfall
- 388 mm
- 39 wet days
- Avg wind
- 11 km/h
- Travel score
- 5.8
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Deception Bay in Summer
Across summer, daytime highs hold fairly steady around 28°C.
A typical summer day in Deception Bay reaches about 28°C and drops to 21°C overnight. The warmest of the three months is January, the coolest December.
Deception Bay 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 | 28° / 22° | 130 | 13.6 | 13.5 | 5.6 |
| Feb | 28° / 21° | 143 | 13.7 | 13 | 5.6 |
| Mar | 27° / 20° | 110 | 14.7 | 12.2 | 6.1 |
| Apr | 25° / 17° | 55 | 10.4 | 11.4 | 7.0 |
| May | 22° / 14° | 69 | 8.3 | 10.7 | 7.3 |
| Jun | 20° / 11° | 58 | 7.4 | 10.3 | 7.1 |
| Jul | 20° / 10° | 31 | 4.4 | 10.5 | 7.7 |
| Aug | 22° / 10° | 40 | 4.8 | 11 | 8.0 |
| Sep | 24° / 13° | 37 | 5.9 | 11.8 | 8.1 |
| Oct | 25° / 16° | 77 | 8.6 | 12.7 | 7.4 |
| Nov | 26° / 19° | 87 | 9.8 | 13.3 | 6.7 |
| Dec | 28° / 20° | 115 | 12 | 13.7 | 6.2 |
Cloud cover in Summer
The sky is clear or mostly clear about 36% of the time across summer.
Chance of precipitation in Summer
Deception Bay gets around 388 mm of rain over 39 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 11 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 36 min in early December to 12 h 36 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 6.0 kWh/m².
Hazard calendar for Deception Bay
In summer, Deception Bay overlaps its cyclone and rainy season season. The full year is below, with each hazard's peak months called out.
Deception Bay sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Deception Bay's rainy season runs May–May, when most of the year's rain falls.
Is summer a good time to visit Deception Bay?
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 Deception Bay for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Deception Bay in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Deception Bay sees daytime highs around 28°C and nights near 21°C. Pack light clothes, rain gear and sun protection. About 39 days see rain.
Sea temperature near Deception Bay in Summer
The nearest coast averages about 26°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 27°C and coldest in August near 20°C.
It's comfortable for a long swim from Aug 27 to Jul 31 — about 11.1 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 26 | 27 | 26 | 24 | 23 | 21 | 20 | 20 | 20 | 22 | 24 | 25 |
| Comfort | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Refreshing | Cool | Refreshing | Refreshing | Refreshing | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 26 | Warm |
| Feb | 27 | Warm |
| Mar | 26 | Warm |
| Apr | 24 | Warm |
| May | 23 | Refreshing |
| Jun | 21 | Refreshing |
| Jul | 20 | Refreshing |
| Aug | 20 | Cool |
| Sep | 20 | Refreshing |
| Oct | 22 | Refreshing |
| Nov | 24 | Refreshing |
| Dec | 25 | Warm |
UV index in Deception Bay 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 Deception Bay peaks around February 9 at about 14 (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) | 13 | 14 | 11 | 8 | 5 | 4 | 5 | 6 | 8 | 10 | 11 | 13 |
| Level | Extreme | Extreme | Extreme | Very high | High | Moderate | Moderate | High | Very high | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 14 | Extreme |
| Mar | 11 | Extreme |
| Apr | 8 | Very high |
| May | 5 | High |
| Jun | 4 | Moderate |
| Jul | 5 | Moderate |
| Aug | 6 | High |
| Sep | 8 | Very high |
| Oct | 10 | Very high |
| Nov | 11 | Extreme |
| Dec | 13 | Extreme |
Where is Deception Bay?
Deception Bay sits at 27.2°S, 153.0°E, 13 m above sea level, in Australia. The nearest listed city is North Lakes, 3.0 km away.
Topography around Deception Bay
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Deception Bay.
Within 3 km, the terrain around Deception Bay has only modest variations in elevation — a maximum elevation change of 42 m around an average of 10 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 335 m; within 80 km, large variations in elevation — a maximum elevation change of 903 m.
The land around Deception Bay is covered by artificial surfaces (32%), trees (27%) and water (22%) within 3 km, water (34%) and trees (31%) within 16 km, and trees (39%) and water (35%) 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 Deception Bay (-27.1935°, 153.0263°, elevation 13 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.