Croydon in Summer
In summer (December, January and February), Croydon sees average daytime highs around 25°C and overnight lows near 13°C, with 184 mm of rain over about 22 wet days across the season. It is the warmest season of the year and the 3rd-wettest season.
Over the season highs climb from about 22°C in early December to 25°C by late February. The sky is clear or mostly clear about 38% of the time across summer, and the air most often feels dry.
Summer is Croydon's best season of the year to visit on our travel score. For the whole year in context, see Croydon's year-round climate.
- Avg daytime high
- 25°C
- warmest season of the year
- Avg overnight low
- 13°C
- Rainfall
- 184 mm
- 22 wet days
- Avg wind
- 11 km/h
- Travel score
- 7.3
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in Croydon in Summer
Over the season highs climb from about 22°C in early December to 25°C by late February.
A typical summer day in Croydon reaches about 25°C and drops to 13°C overnight. The warmest of the three months is January, the coolest December.
Croydon 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 | 25° / 13° | 58 | 7.3 | 14.3 | 7.4 |
| Feb | 25° / 14° | 52 | 6.2 | 13.5 | 7.5 |
| Mar | 23° / 12° | 45 | 7.1 | 12.3 | 7.4 |
| Apr | 19° / 10° | 59 | 8.2 | 11.1 | 6.3 |
| May | 16° / 8° | 60 | 10.4 | 10 | 4.7 |
| Jun | 13° / 6° | 65 | 11.6 | 9.4 | 3.4 |
| Jul | 12° / 6° | 63 | 12.9 | 9.7 | 3.0 |
| Aug | 13° / 6° | 77 | 13.8 | 10.5 | 3.5 |
| Sep | 16° / 7° | 82 | 13.4 | 11.7 | 4.5 |
| Oct | 18° / 8° | 79 | 12.1 | 13 | 5.6 |
| Nov | 21° / 10° | 78 | 10.3 | 14 | 6.3 |
| Dec | 23° / 12° | 74 | 8.8 | 14.6 | 7.1 |
Cloud cover in Summer
The sky is clear or mostly clear about 38% of the time across summer.
Chance of precipitation in Summer
Croydon gets around 184 mm of rain over 22 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — 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 14 h 24 min in early December to 13 hours 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 6.8 kWh/m².
Hazard calendar for Croydon
In summer, Croydon overlaps its cyclone season. The full year is below, with each hazard's peak months called out.
Croydon sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Is summer a good time to visit Croydon?
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 one of the better times to visit Croydon for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Croydon in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Croydon sees daytime highs around 25°C and nights near 13°C. Pack sun protection. Worth having: light clothes and rain gear. About 22 days see rain.
Sea temperature near Croydon in Summer
The nearest coast averages about 20°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 37 km away) is warmest in February at about 21°C and coldest in August near 11°C.
It's comfortable for a long swim from Jan 15 to Mar 11 — about 1.8 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 20 | 21 | 20 | 18 | 15 | 13 | 12 | 11 | 12 | 14 | 17 | 19 |
| Comfort | Refreshing | Refreshing | Cool | Cool | Cool | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 20 | Refreshing |
| Feb | 21 | Refreshing |
| Mar | 20 | Cool |
| Apr | 18 | Cool |
| May | 15 | Cool |
| Jun | 13 | Bracing |
| Jul | 12 | Bracing |
| Aug | 11 | Bracing |
| Sep | 12 | Bracing |
| Oct | 14 | Bracing |
| Nov | 17 | Cool |
| Dec | 19 | Cool |
UV index in Croydon in Summer
Clear-sky midday UV across summer averages around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Croydon peaks around December 19 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 11 | 10 | 8 | 5 | 3 | 2 | 2 | 3 | 4 | 7 | 10 | 12 |
| Level | Extreme | Extreme | Very high | Moderate | Moderate | Low | Moderate | Moderate | Moderate | Very high | Very high | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 11 | Extreme |
| Feb | 10 | Extreme |
| Mar | 8 | Very high |
| Apr | 5 | Moderate |
| May | 3 | Moderate |
| Jun | 2 | Low |
| Jul | 2 | Moderate |
| Aug | 3 | Moderate |
| Sep | 4 | Moderate |
| Oct | 7 | Very high |
| Nov | 10 | Very high |
| Dec | 12 | Extreme |
Air quality in Croydon 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 Croydon is worst in April — around 24 µg/m³ PM2.5 (moderate), about 4.8× the cleanest month (July, 5 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 | 6 | 18 | 24 | 8 | 5 | 5 | 6 | 7 | 7 | 7 | 7 |
| Level | Good | Good | Moderate | Moderate | Good | Good | Good | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 6 | Good |
| Mar | 18 | Moderate |
| Apr | 24 | Moderate |
| May | 8 | Good |
| Jun | 5 | Good |
| Jul | 5 | Good |
| Aug | 6 | Good |
| Sep | 7 | Good |
| Oct | 7 | Good |
| Nov | 7 | Good |
| Dec | 7 | Good |
Where is Croydon?
Croydon sits at 37.8°S, 145.3°E, 109 m above sea level, in Australia. The nearest listed city is Mooroolbark, 4.0 km away.
Topography around Croydon
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Croydon.
Within 3 km, the terrain around Croydon has only modest variations in elevation — a maximum elevation change of 130 m around an average of 125 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 623 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,507 m.
The land around Croydon is covered by trees (61%) and artificial surfaces (32%) within 3 km, trees (63%) within 16 km, and trees (40%) and grassland (34%) 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 Croydon (-37.8°, 145.2833°, elevation 109 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.