Climate and monthly weather forecastThornleigh, Australia
Climate and monthly weather forecast
Weather in January
January, the same as December, is another warm summer month in Thornleigh, Australia, with an average temperature fluctuating between 18.8°C (65.8°F) and 29.2°C (84.6°F). Thornleigh's January weather reaches an average high of 29.2°C (84.6°F) and an average low of 18.8°C (65.8°F), making it the warmest month. January's average heat index is calculated to be a hot 33°C (91.4°F). Weather in January »Weather in February
The last month of the summer, February, is also a moderately hot month in Thornleigh, Australia, with an average temperature ranging between max 27.5°C (81.5°F) and min 18.3°C (64.9°F). February's weather records an average high-temperature of a still moderately hot 27.5°C (81.5°F), showing little deviation from January. Weather in February »Weather in March
The first month of the autumn, March, is also a moderately hot month in Thornleigh, Australia, with temperature in the range of an average low of 17.3°C (63.1°F) and an average high of 26°C (78.8°F). The shift into March reveals an average high-temperature of a still moderately hot 26°C (78.8°F), closely mirroring February's climate. Weather in March »Weather in April
April, the same as March, is another warm autumn month in Thornleigh, Australia, with an average temperature ranging between max 23.2°C (73.8°F) and min 14.6°C (58.3°F). The commencement of April brings an average high-temperature of a still moderately hot 23.2°C (73.8°F), marking an inconsequential divergence from March. Weather in April »Weather in May
May, the last month of the autumn in Thornleigh, is another comfortable month, with an average temperature fluctuating between 19.9°C (67.8°F) and 10.9°C (51.6°F). The beginning of May subtly marks a decrease in the average high-temperature, transitioning from a warm 23.2°C (73.8°F) in April to an enjoyable 19.9°C (67.8°F). Weather in May »Weather in June
The first month of the winter, June, is still a comfortable month in Thornleigh, Australia, with temperature in the range of an average low of 9.3°C (48.7°F) and an average high of 16.8°C (62.2°F). June tends to be the coldest month, with temperatures averaging a daily high of 16.8°C (62.2°F) and a low of 9.3°C (48.7°F). Weather in June »Weather in July
July, like June, in Thornleigh, Australia, is another refreshing winter month, with an average temperature ranging between min 8.1°C (46.6°F) and max 16.9°C (62.4°F). July is marked by an average high-temperature of a still comfortable 16.9°C (62.4°F), almost identical to the preceding month. Weather in July »Weather in August
August, the last month of the winter in Thornleigh, is another refreshing month, with an average temperature fluctuating between 18.3°C (64.9°F) and 8.3°C (46.9°F). The beginning of August reveals an average high-temperature of a still refreshing 18.3°C (64.9°F), showing minimal deviation from the previous month. Weather in August »Weather in September
The first month of the spring, September, is a pleasant month in Thornleigh, Australia, with temperature in the range of an average low of 10.6°C (51.1°F) and an average high of 21.6°C (70.9°F). As August transitions into September, Thornleigh notices a gentle rise in the average high-temperature, transitioning from a comfortable 18.3°C (64.9°F) to a pleasant 21.6°C (70.9°F). Weather in September »Weather in October
October is a moderately hot spring month in Thornleigh, Australia, with temperature in the range of an average high of 24.1°C (75.4°F) and an average low of 13°C (55.4°F). October's arrival brings an average high-temperature of a warm 24.1°C (75.4°F), slightly deviating from September's 21.6°C (70.9°F). Weather in October »Weather in November
The last month of the spring, November, is another warm month in Thornleigh, Australia, with an average temperature ranging between min 15.5°C (59.9°F) and max 26.1°C (79°F). November brings an average high-temperature of a still moderately hot 26.1°C (79°F), showing a slight difference from October's 24.1°C (75.4°F). Weather in November »Weather in December
December, the first month of the summer in Thornleigh, is still a warm month, with temperature in the range of an average low of 17.1°C (62.8°F) and an average high of 27.7°C (81.9°F). The advent of December brings an average high-temperature of a still warm 27.7°C (81.9°F), almost identical to the preceding month. 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
With average high temperatures of 29.2°C (84.6°F) and lows of 18.8°C (65.8°F), January is the warmest month in Thornleigh.
In Thornleigh, Australia, during the entire year, the rain falls for 149.1 days and collects up to 546mm (21.5") of precipitation.
January, February, November and December, with an average maximum UV index of 6, are months with the highest UV index in Thornleigh.
The month with the most rainfall is February, when the rain falls for 15.2 days and typically aggregates up to 87mm (3.43") of precipitation.
On Sunday, 07. April 2024, at 3:00 am, Daylight Saving Time ends in Thornleigh, and the time zone changes from AEDT to AEST. The next Daylight Saving Time starts on Sunday, 06. October 2024, at 2:00 am, and the time zone reverts from AEST to AEDT.
May is the month with the least rainfall. Rain falls for 8.6 days and accumulates 27mm (1.06") of precipitation.
May through September, with an average maximum UV index of 4, are months with the lowest UV index in Thornleigh.
June, recording an average high temperature of 16.8°C (62.2°F) and a low temperature of 9.3°C (48.7°F), is Thornleigh's coldest month.
June is the most humid month, with an average relative humidity of 76%.
The month with the shortest days is June, with an average of 10h and 0min of daylight.
The month with the least sunshine is June, with an average of 5.8h of sunshine.
September is the least humid month in Thornleigh, Australia, with an average relative humidity of 65%.
November and December, with an average of 9.4h of sunshine, are months with the most sunshine.
December has the longest days of the year, with an average of 14h and 24min of daylight.
Average temperature
Thornleigh, Australia
The warmest month (with the highest average high temperature) is January (29.2°C).
The month with the lowest average high temperature is June (16.8°C).
The month with the highest average low temperature is January (18.8°C).
The coldest month (with the lowest average low temperature) is July (8.1°C).
Average pressure
Thornleigh, Australia
- Average pressure in January:
1012.9mbar - Average pressure in February:
1014.8mbar - Average pressure in March:
1017.2mbar - Average pressure in April:
1019.3mbar - Average pressure in May:
1020.2mbar - Average pressure in June:
1021mbar
- Average pressure in July:
1020.5mbar - Average pressure in August:
1018.1mbar - Average pressure in September:
1017.2mbar - Average pressure in October:
1017.9mbar - Average pressure in November:
1014.8mbar - Average pressure in December:
1013.3mbar
The month with the highest atmospheric pressure is June (1021mbar).
The month with the lowest atmospheric pressure is January (1012.9mbar).
Average wind speed
Thornleigh, Australia
- Average wind speed in January:
10.1km/h - Average wind speed in February:
9.9km/h - Average wind speed in March:
9.4km/h - Average wind speed in April:
8.8km/h - Average wind speed in May:
9km/h - Average wind speed in June:
9.3km/h
- Average wind speed in July:
9.4km/h - Average wind speed in August:
10km/h - Average wind speed in September:
10.1km/h - Average wind speed in October:
9.9km/h - Average wind speed in November:
10.1km/h - Average wind speed in December:
10.2km/h
The windiest month (with the highest average wind speed) is December (10.2km/h).
The calmest month (with the lowest average wind speed) is April (8.8km/h).
Average humidity
Thornleigh, Australia
The month with the highest relative humidity is June (76%).
The month with the lowest relative humidity is September (65%).
Average rainfall
Thornleigh, Australia
The wettest month (with the highest rainfall) is February (87mm).
The driest month (with the least rainfall) is May (27mm).
Average rainfall days
Thornleigh, Australia
- Average rainfall days in January:
15.9 days - Average rainfall days in February:
15.2 days - Average rainfall days in March:
17.6 days - Average rainfall days in April:
13.8 days - Average rainfall days in May:
8.6 days - Average rainfall days in June:
11.8 days
- Average rainfall days in July:
9.5 days - Average rainfall days in August:
7.9 days - Average rainfall days in September:
9.1 days - Average rainfall days in October:
12.5 days - Average rainfall days in November:
13.2 days - Average rainfall days in December:
14 days
The month with the highest number of rainy days is March (17.6 days).
The month with the least rainy days is August (7.9 days).
Average daylight / Average sunshine
Thornleigh, Australia
- Average daylight in January:
14h and 6min - Average daylight in February:
13h and 18min - Average daylight in March:
12h and 18min - Average daylight in April:
11h and 18min - Average daylight in May:
10h and 24min - Average daylight in June:
10h and 0min
- Average daylight in July:
10h and 12min - Average daylight in August:
10h and 54min - Average daylight in September:
11h and 54min - Average daylight in October:
12h and 54min - Average daylight in November:
13h and 54min - Average daylight in December:
14h and 24min
The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 10h and 0min).
- Average sunshine in January:
8h and 12min - Average sunshine in February:
7h and 12min - Average sunshine in March:
7h and 24min - Average sunshine in April:
7h and 48min - Average sunshine in May:
7h and 42min - Average sunshine in June:
5h and 48min
- Average sunshine in July:
8h and 0min - Average sunshine in August:
8h and 24min - Average sunshine in September:
8h and 36min - Average sunshine in October:
8h and 12min - Average sunshine in November:
9h and 24min - Average sunshine in December:
9h and 24min
The months with the most sunshine are November and December (Average sunshine: 9h and 24min).
The month with the least sunshine is June (Average sunshine: 5h and 48min).
Average sunshine days
Thornleigh, Australia
- Average sunshine days in January:
11.6 days - Average sunshine days in February:
10.4 days - Average sunshine days in March:
10.6 days - Average sunshine days in April:
13.4 days - Average sunshine days in May:
19.3 days - Average sunshine days in June:
15.6 days
- Average sunshine days in July:
19 days - Average sunshine days in August:
21 days - Average sunshine days in September:
19.5 days - Average sunshine days in October:
16.3 days - Average sunshine days in November:
13.1 days - Average sunshine days in December:
14.2 days
The month with the most sunshine days is August (21 days).
The month with the least sunshine days is February (10.4 days).
Average UV index
Thornleigh, Australia
The months with the highest UV index are January, February, November and December (UV index 6).
The months with the lowest UV index are May, June, July, August and September (UV index 4).
Average cloud cover
Thornleigh, Australia
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility
Thornleigh, Australia
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
