Climate and monthly weather forecastAdelaide, Australia
Climate and monthly weather forecast
The climate of Adelaide
Adelaide, Australia sits within the Köppen climate zone of Csb, defined as a Mediterranean, warm summer climate. The geographical position of Adelaide, lying within the southern hemisphere on the south coast of Australia, helps form this climate encompassing warm to hot dry summers and mild, somewhat wet winters.The temperature swings between 13.9°C (57°F) in July to a peak of 26.3°C (79.3°F) in January, marking a distinct seasonal pattern. A variability in highs and lows is apparent, with the lowest temperatures around 9.1°C (48.4°F) in August, escalating to around 17.8°C (64°F) in January. Keeping in line with the Mediterranean classification, Adelaide experiences higher humidity levels, from 58% in February to the peak of 74% between June and July.
Rainfall data displays a consistent increase in precipitation from February, with an average rainfall of 17mm (0.67"), culminating in a maximum of 43mm (1.69") in August. This is followed by a steady decrease to 24mm (0.94") in December. Expect wetter days from May through to August, with the most rain occurring over 15.2 days in July.
Sea temperatures in the region range from 15°C (59°F) in August to 20°C (68°F) in February, reflecting the seasonal variations. The strongest winds blow in July and August, reaching a gust speed of around 25.6km/h (15.9mph). Sunshine hours show a noticeable shift from low in June at 7.2 hours to high in December at 10.1 hours, following a consistent pattern throughout the year.
The best time to visit Adelaide
Given Adelaide's Mediterranean climate, the best time to visit is during the moderate spring and autumn months. From September through to November, temperatures are in the balmy bracket from 16.4°C (61.5°F) to 21.9°C (71.4°F), coupled with rainfall averages dropping from 25mm (0.98") to 20mm (0.79"). During these months, daylight hours range from 11.9 hours to 13.9 hours, offering plenty of time to enjoy outdoor activities.The worst time to visit Adelaide
The least favorable time to visit Adelaide is during the coldest winter months of June and July. The temperatures drop to as low as 13.9°C (57°F) and 14.5°C (58.1°F) respectively with the highest humidity rates of 74%. Coupled with the highest rainfall periods up to 36mm (1.42") over 15.2 days in July, outdoor activities can be less enjoyable.Spring weather in Adelaide
In Adelaide, spring arrives in September and lasts through November. Temperatures during the spring months fluctuate from 16.4°C (61.5°F) to 21.9°C (71.4°F), signalling the transition toward warmer weather. While daylight hours increase steadily from 11.9 hours to 13.9 hours, sunshine hours also increase from 8.0 hours to 9.3 hours. Winds range from 15.7km/h (9.8mph) to 14km/h (8.7mph), and rainfall gradually declines from 25mm (0.98") in September to 20mm (0.79") in November.Summer weather in Adelaide
The summer months between December and February witness the highest temperatures in Adelaide, ranging from 24.5°C (76.1°F) to 26.3°C (79.3°F). With the longest daylight hours, peaking at 14.5 hours in December, there is abundant sunshine averaging around 10.1 hours in December. Wind speeds drop to around 14km/h (8.7mph) while rainfall hovers between 17mm (0.67") and 24mm (0.94"), making these months the driest period of the year.Autumn weather in Adelaide
During the autumn months, between March and May, the weather in Adelaide becomes milder. Temperatures decline from 23.7°C (74.7°F) in March to 17.2°C (63°F) by May. Rainfall starts to increase from 16mm (0.63") in March to 36mm (1.42") in May. The wind speed also rises from 13.3km/h (8.3mph) in March to 14km/h (8.7mph) by May. Despite this, it marks a beautiful period of decreased heat and an increase in greenery due to the rising rainfall.Winter weather in Adelaide
Winter in Adelaide falls between June and August. This time of the year experiences the coolest temperatures, from 14.6°C (58.3°F) in June to the lowest at 13.9°C (57°F) in July. Rainfall is at its peak, with the highest of 43mm (1.69") in August, with a maximum of 15.2 rainy days in July. Wind speeds rise, peaking at 16.3km/h (10.1mph) in August. As a trade-off, daylight hours and sunshine hours are at their lowest, remaining below 11 hours and 8 hours respectively.Weather in January
Indeed, January is the heat zenith in Adelaide, placing it among the warmest months of the year. Temperatures elevate to a monthly average high of 26.3°C (79.3°F) with peak humidity at 58%. Consequently, January offers expansive sunny hours with an average of 9 hours amidst a daylight duration of 14.2 hours. Weather in January »Weather in February
Continuing the summer trend from January, February presents bountiful sunshine hours with temperatures reaching an average high of 25.6°C (78.1°F). The UV index steps up to 6 indicating the need for adequate sun protection measures. Weather in February »Weather in March
The month of March signifies the onset of Fall in Adelaide marked by a gentle temperature drop to an average high of 23.7°C (74.7°F). There is a surge in cloud cover to 28%, nevertheless, it sees nearly the same amount of sunshine hours as in February. Weather in March »Weather in April
April brings the authenticity of fall to Adelaide, registering lower temperatures and increased rainfall. The average high temperature experiences a significant decline to 20.8°C (69.4°F) and rainfall sums up to 28mm (1.1") over 9.4 days. Weather in April »Weather in May
As Winter approaches, May undergoes a distinctive change in weather with temperatures dropping to an average high of 17.2°C (63°F) and a plunge in sea temperatures to 18°C (64.4°F). Speckled with an increased number of rainy days, predominantly 12.9 days, the city receives 36mm (1.42") of rainfall. Weather in May »Weather in June
With winter in full swing by June, Adelaide experiences more rainfall and lower temperatures. An increase in humidity to 74% enhances the overall chilly feel of the city. Despite the all-encompassing fog, visibility remains unhindered at 10km (6.2mi) ensuring minimal disruption to the traffic and daily life. Weather in June »Weather in July
July, being the core of Winter, registers a lower average high temperature of 13.9°C (57°F) with frequent gusts that reach 25km/h (15.5mph). The highest rainfall of the year is observed with approximately 36mm (1.42") spread over 15.2 days. Weather in July »Weather in August
August cherishes the frosty end of winter followed by the welcoming warmth of spring. The temperatures exhibit a mild increase to an average high of 14.5°C (58.1°F). Adelaide experiences heightened gust speeds up to 25.6km/h (15.9mph), marking them as the highest of the year. Weather in August »Weather in September
As the threshold of Spring, September presents a welcomed climb in temperature to an average high of 16.4°C (61.5°F). The rainfall begins its descent as the Spring bloom takes over the city of Adelaide. Wind speeds taper off, making conditions less gusty and more suited for outdoor indulgence. Weather in September »Weather in October
October graces Adelaide with warmer temperatures, marking the full-blown arrival of Spring. The pleasant climate with highs of 19.7°C (67.5°F) and low rainfall facilitates a host of activities, making October a popular time for festivals and events. Weather in October »Weather in November
November, the last month of the spring in Adelaide, is a pleasant month, with temperature in the range of an average low of 13.8°C (56.8°F) and an average high of 21.9°C (71.4°F). November's onset brings an average high-temperature of a pleasant 21.9°C (71.4°F), showing a minute difference from October's 19.7°C (67.5°F). Weather in November »Weather in December
In December, Adelaide marks the switch from the pleasant spring weather to the warm embrace of summer. With an average high of 24.5°C (76.1°F) and low humidity of 59%, summer activities like surfing, swimming, and hiking come into full swing. Weather in December »Updated: Jan 26, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The warmest month in Adelaide, Australia, is January, with an average high-temperature of 26.3°C (79.3°F) and an average low-temperature of 17.8°C (64°F).
With an average relative humidity of 58%, January is the least humid month in Adelaide, Australia.
Throughout the year, there are 126.2 rainfall days, and 326mm (12.83") of precipitation is accumulated.
With an average sea temperature of 20°C (68°F), February is the month with the warmest seawater in Adelaide.
The months with the highest UV index in Adelaide, Australia, are February and December, with an average maximum UV index of 6.
The month with the least rainfall in Adelaide is March, when the rain falls for 9.3 days and typically collects 16mm (0.63") of precipitation.
On Sunday, 07. April 2024, at 3:00 am, Daylight Saving Time ends, and the time zone changes from ACDT to ACST. The next Daylight Saving Time starts on Sunday, 06. October 2024, at 2:00 am, and the time zone reverts from ACST to ACDT.
The months with the highest humidity are June and July, with an average relative humidity of 74%.
The month with the shortest days is June, with an average of 9h and 48min of daylight.
The month with the lowest UV index in Adelaide is June, with an average maximum UV index of 3.
The coldest time of the year in Adelaide is July, with temperatures averaging a high of 13.9°C (57°F) and a low of 9.3°C (48.7°F).
August is the month with the most rainfall in Adelaide. Rain falls for 14.2 days and accumulates 43mm (1.69") of precipitation.
The months with the coldest seawater in Adelaide, Australia, are August through October, with an average sea temperature of 15°C (59°F).
August has the least sunshine of the year, with an average of 7.1h of sunshine.
The month with the longest days is December, with an average of 14h and 30min of daylight.
The month with the most sunshine is December, with an average of 10.1h of sunshine.
Average temperature
Adelaide, Australia
The warmest month (with the highest average high temperature) is January (26.3°C).
The month with the lowest average high temperature is July (13.9°C).
The month with the highest average low temperature is January (17.8°C).
The coldest month (with the lowest average low temperature) is August (9.1°C).
Average pressure
Adelaide, Australia
- Average pressure in January:
1012.4mbar - Average pressure in February:
1014.4mbar - Average pressure in March:
1016.9mbar - Average pressure in April:
1019.6mbar - Average pressure in May:
1020.8mbar - Average pressure in June:
1021.8mbar
- Average pressure in July:
1020.5mbar - Average pressure in August:
1018.6mbar - Average pressure in September:
1017.5mbar - Average pressure in October:
1017.8mbar - Average pressure in November:
1015mbar - Average pressure in December:
1013mbar
The month with the highest atmospheric pressure is June (1021.8mbar).
The month with the lowest atmospheric pressure is January (1012.4mbar).
Average wind speed
Adelaide, Australia
- Average wind speed in January:
14.3km/h - Average wind speed in February:
13.7km/h - Average wind speed in March:
13.3km/h - Average wind speed in April:
12.9km/h - Average wind speed in May:
14km/h - Average wind speed in June:
14.1km/h
- Average wind speed in July:
16.1km/h - Average wind speed in August:
16.3km/h - Average wind speed in September:
15.7km/h - Average wind speed in October:
14.7km/h - Average wind speed in November:
14km/h - Average wind speed in December:
14.3km/h
The windiest month (with the highest average wind speed) is August (16.3km/h).
The calmest month (with the lowest average wind speed) is April (12.9km/h).
Average humidity
Adelaide, Australia
The months with the highest relative humidity are June and July (74%).
The month with the lowest relative humidity is January (58%).
Average rainfall
Adelaide, Australia
The wettest month (with the highest rainfall) is August (43mm).
The driest month (with the least rainfall) is March (16mm).
Average rainfall days
Adelaide, Australia
- Average rainfall days in January:
6.4 days - Average rainfall days in February:
6.2 days - Average rainfall days in March:
9.3 days - Average rainfall days in April:
9.4 days - Average rainfall days in May:
12.9 days - Average rainfall days in June:
12.3 days
- Average rainfall days in July:
15.2 days - Average rainfall days in August:
14.2 days - Average rainfall days in September:
11.8 days - Average rainfall days in October:
9.3 days - Average rainfall days in November:
9.7 days - Average rainfall days in December:
9.5 days
The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is February (6.2 days).
Average sea temperature
Adelaide, Australia
The best month for swimming (with the highest average sea temperature) is February (20°C).
The coldest months (with the lowest average sea temperature) are August, September and October (15°C).
Average daylight / Average sunshine
Adelaide, Australia
- Average daylight in January:
14h and 12min - Average daylight in February:
13h and 24min - Average daylight in March:
12h and 18min - Average daylight in April:
11h and 12min - Average daylight in May:
10h and 18min - Average daylight in June:
9h and 48min
- Average daylight in July:
10h and 6min - Average daylight in August:
10h and 48min - Average daylight in September:
11h and 54min - Average daylight in October:
13h and 0min - Average daylight in November:
13h and 54min - Average daylight in December:
14h and 30min
The month with the longest days is December (Average daylight: 14h and 30min).
The month with the shortest days is June (Average daylight: 9h and 48min).
- Average sunshine in January:
9h and 0min - Average sunshine in February:
8h and 54min - Average sunshine in March:
8h and 18min - Average sunshine in April:
8h and 0min - Average sunshine in May:
7h and 12min - Average sunshine in June:
7h and 18min
- Average sunshine in July:
7h and 12min - Average sunshine in August:
7h and 6min - Average sunshine in September:
8h and 0min - Average sunshine in October:
8h and 24min - Average sunshine in November:
9h and 18min - Average sunshine in December:
10h and 6min
The month with the most sunshine is December (Average sunshine: 10h and 6min).
The month with the least sunshine is August (Average sunshine: 7h and 6min).
Average sunshine days
Adelaide, Australia
- Average sunshine days in January:
21.9 days - Average sunshine days in February:
19.6 days - Average sunshine days in March:
19 days - Average sunshine days in April:
17.8 days - Average sunshine days in May:
14.5 days - Average sunshine days in June:
14.8 days
- Average sunshine days in July:
13.1 days - Average sunshine days in August:
12.7 days - Average sunshine days in September:
14.5 days - Average sunshine days in October:
18.6 days - Average sunshine days in November:
17.7 days - Average sunshine days in December:
18.8 days
The month with the most sunshine days is January (21.9 days).
The month with the least sunshine days is August (12.7 days).
Average UV index
Adelaide, Australia
The months with the highest UV index are February and December (UV index 6).
The month with the lowest UV index is June (UV index 3).
Average cloud cover
Adelaide, Australia
The month with the most cloud cover is July (Cloud cover 41).
The month with the least cloud cover is January (Cloud cover 20).
Average visibility
Adelaide, Australia
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
