Adelaide, Australia experiences average highs of 21°C (70°F) and lows of 13°C (55°F) throughout the year. The climate is relatively dry, with only 6 rainy days per month on average. Sunshine is abundant, averaging about 10 hours per day. Average highs have warmed by 0.8°C (1.4°F) across the available records.
Adelaide, Australia Weather & Climate 2026
Monthly climate averages for Adelaide, Australia. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Jun–Sep At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
7.9/10
Best: January, February, March, December
UV Index
6
High
Temperature 21°C / 13°C
Feels Like 19°C / 10°C
Rainy Days 6
Rainfall 37 mm
Sunshine 10 h
Humidity 66%
Wind Speed 24 km/h
Dew Point 10°C
Hottest Month
28°C
January
Avg Low18°C
Rain4days
Coldest Month
9°C
July
Avg High14°C
Rain10days
Driest Month
2days
February
Avg High27°C
Avg Low17°C
Windiest Month
26 km/h
September (Gusts 41)
Sea Temperature
13°C – 23°C
Warmest water: January (
23°C
)
Worst Time to Visit
Consider avoiding June, July, August due to less favorable weather conditions.
Sun Position
Sunrise 07:23
Daylight 9.8h
Sunset 17:12
Live conditions—
Adelaide on the map · live conditions
Adelaide, Australia
- Continent
- Oceania
- Country
- Australia
- City
- Adelaide
- Population
- 1.5M
- Coordinates
- -34.93°, 138.60°
Seasonal Breakdown
Spring
Sep–Nov
Avg High 20°C
Avg Low 12°C
Rain 7 days/mo
Summer
Dec–Feb
Avg High 27°C
Avg Low 17°C
Rain 3 days/mo
3/3 best months
Autumn
Mar–May
Avg High 22°C
Avg Low 14°C
Rain 5 days/mo
1/3 best months
Winter
Jun–Aug
Avg High 14°C
Avg Low 9°C
Rain 10 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 28°C / 18°C . Feb: 27°C / 17°C . Mar: 26°C / 16°C . Apr: 22°C / 14°C . May: 17°C / 11°C . Jun: 15°C / 9°C . Jul: 14°C / 9°C . Aug: 15°C / 9°C . Sep: 17°C / 10°C . Oct: 20°C / 12°C . Nov: 23°C / 14°C . Dec: 26°C / 16°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 25 mm. Feb: 13 mm. Mar: 14 mm. Apr: 25 mm. May: 44 mm. Jun: 55 mm. Jul: 59 mm. Aug: 59 mm. Sep: 45 mm. Oct: 42 mm. Nov: 38 mm. Dec: 19 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 55%. Feb: 56%. Mar: 60%. Apr: 64%. May: 71%. Jun: 77%. Jul: 78%. Aug: 75%. Sep: 70%. Oct: 65%. Nov: 62%. Dec: 56%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 24 km/h . Feb: 24 km/h . Mar: 22 km/h . Apr: 21 km/h . May: 23 km/h . Jun: 23 km/h . Jul: 25 km/h . Aug: 25 km/h . Sep: 26 km/h . Oct: 26 km/h . Nov: 25 km/h . Dec: 25 km/h .
Sunshine
Sunshine
Sunshine: Jan: 12h. Feb: 12h. Mar: 11h. Apr: 9h. May: 8h. Jun: 8h. Jul: 8h. Aug: 9h. Sep: 10h. Oct: 11h. Nov: 12h. Dec: 12h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 23°C . Feb: 23°C . Mar: 23°C . Apr: 20°C . May: 17°C . Jun: 14°C . Jul: 13°C . Aug: 13°C . Sep: 15°C . Oct: 17°C . Nov: 19°C . Dec: 21°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 9. Feb: UV 9. Mar: UV 7. Apr: UV 5. May: UV 4. Jun: UV 3. Jul: UV 3. Aug: UV 4. Sep: UV 6. Oct: UV 7. Nov: UV 8. Dec: UV 9.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Climate Trends
Average highs have warmed by 0.8°C (1.4°F) across the available records. Average rainfall is trending drier by about 20 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Feb 2025 · 29°C | Jan · 28°C |
| Coldest month | Jul 2025 · 9°C | Jul · 9°C |
| Wettest month | Jul 2025 · 94 mm | Jul · 59 mm |
| Windiest month | Nov 2025 · 27 km/h | Sep · 26 km/h |
Month-by-Month Weather Table
January best
Excellent 
February best
Excellent March best
Excellent April
Excellent May
Good June
Fair July
Fair August
Fair September
Good October
Good November
Good December best
Excellent | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January best | 28°C / 18°C | 28°C / 16°C | 4days (25 mm) Good | 12.1h Excellent | 55% Moderate | 8.8 Very High | Excellent | View Details |
| February best | 27°C / 17°C | 27°C / 16°C | 2days (13 mm) Excellent | 11.5h Excellent | 56% Moderate | 8.5 Very High | Excellent | View Details |
| March best | 26°C / 16°C | 25°C / 15°C | 3days (14 mm) Excellent | 10.7h Excellent | 60% Moderate | 7 High | Excellent | View Details |
| April | 22°C / 14°C | 20°C / 12°C | 5days (25 mm) Good | 9.2h Good | 64% Muggy | 5.1 High | Excellent | View Details |
| May | 17°C / 11°C | 15°C / 8°C | 7days (44 mm) Good | 8.3h Good | 71% Muggy | 3.6 Moderate | Good | View Details |
| June | 15°C / 9°C | 12°C / 6°C | 9days (55 mm) Wet | 7.5h Good | 77% Humid | 2.8 Moderate | Fair | View Details |
| July | 14°C / 9°C | 11°C / 5°C | 10days (59 mm) Wet | 7.8h Good | 78% Humid | 3 Moderate | Fair | View Details |
| August | 15°C / 9°C | 12°C / 6°C | 10days (59 mm) Wet | 8.7h Good | 75% Muggy | 4.2 Moderate | Fair | View Details |
| September | 17°C / 10°C | 15°C / 7°C | 8days (45 mm) Wet | 9.9h Good | 70% Muggy | 5.8 High | Good | View Details |
| October | 20°C / 12°C | 18°C / 9°C | 7days (42 mm) Good | 10.7h Excellent | 65% Muggy | 7.1 Very High | Good | View Details |
| November | 23°C / 14°C | 21°C / 11°C | 7days (38 mm) Good | 11.7h Excellent | 62% Muggy | 7.8 Very High | Good | View Details |
| December best | 26°C / 16°C | 25°C / 14°C | 3days (19 mm) Excellent | 12.3h Excellent | 56% Moderate | 8.7 Very High | Excellent | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Adelaide are January, February, March, December, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Adelaide, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Adelaide is January, with average daytime highs of 28°C (83°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Adelaide is July, with average overnight lows of 9°C (48°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Adelaide is July, averaging 59mm of precipitation across 10 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Adelaide runs through July, August, with the heaviest rainfall in July. Based on 10-year averages for Adelaide.
Adelaide receives approximately 120 sunshine hours per year. The sunniest month is December with around 12 hours. Based on climate data for Adelaide.
The least favorable months to visit Adelaide are June, July, August, primarily due to less favorable weather conditions. For the best conditions, consider January, February, March, December instead.
The annual average UV index in Adelaide is 6, classified as high. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Adelaide is 66%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes — sea temperatures in January, February, March average 23°C (73°F), which is warm and comfortable for swimming and water activities.
Average wind speeds in Adelaide are 24 km/h (15 mph). The windiest month is September with peak winds reaching 26 km/h (16 mph) (gusts up to 41 km/h / 26 mph).
Adelaide averages 7 clear-sky days per month with overall cloud cover around 46%. The clearest skies occur in February.
The annual average dew point in Adelaide is 10°C (50°F), which feels pleasant with low humidity. Outdoor activities are comfortable year-round from a humidity standpoint.
Adelaide has a Cold Semi-Arid climate, classified as BSk under the Köppen system. Arid climates have very low rainfall relative to temperature, with large swings between daytime heat and cool nights.
The 'feels like' temperature in Adelaide ranges from 10°C (50°F) to 19°C (66°F) on average. Wind chill makes winters feel noticeably colder than the actual temperature — layered clothing is recommended.
June is not the best time to visit Adelaide, with a climate score of 5.4/10. Consider visiting during January, February, March, December instead for better conditions.
For June in Adelaide, pack Layered clothing, Light jacket, Umbrella, Comfortable walking shoes. With average highs of 15°C (58°F) and 9 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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