January 27° · ☂ 10 February 28° · ☂ 10 March 26° · ☂ 12 April 24° · ☂ 10 May 21° · ☂ 8 June 18° · ☂ 10 July 18° · ☂ 8 August 20° · ☂ 7 ★ September22° · ☂ 7 ★ October24° · ☂ 9 ★ November25° · ☂ 10 December 27° · ☂ 9 Sydney in January:hot, frequent rain Sydney, Australia · Records from 2006 to 2025. Not a forecast.
Mean high 27° Hottest day 44° (2020)
Mean low 20° Coldest night 12.1° (2012)
Rain days 10 days 2-16 by year
Rainfall 98mm Daylight 14.4 → 13.8 h
Sydney's 12 months i Best: September to November
1 2 3 4 5 6 7 8 9 10 11 12
Trip types Beach Finecool sea Sightseeing on foot Fine
Sea temperature 23.5° 22.8-23.9° by year (last 6)
Sunrise / sunset (15th) 05:59 / 20:09 Daylight 14.4 → 13.8 h
Sydney in January High summer, hot and humid. January 26 is Australia Day, with boat races and events on the harbour. Schools are on holiday and beaches and the harbour are crowded. UV is very strong, so a hat and sunscreen are essential.
Days averaged 27°C and nights 20°C. Midday was for air conditioning, a cold drink or a long lunch out of the sun. Rain fell on 10 days of the month on average. A visitor in 2009 met 2 rain days; one in 2022 met 16. The average of 10 hid that gap.
Highs passed 30°C on 7 days on average. Not every year was typical: 2019 ran 3.0°C warmer than the mean, with highs of 30.1°C.
Date by date i Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
January 1 Friday 1 rain in 6 of 20 yrs 6/20 28° 19° January 2 Saturday 2 rain in 5 of 20 yrs 5/20 26° 20° 1-2 rain on 28% of days 27° 20°
January 3 Sunday 3 rain in 9 of 20 yrs 9/20 25° 20° January 4 Monday 4 rain in 10 of 20 yrs 10/20 27° 19° January 5 Tuesday 5 rain in 8 of 20 yrs 8/20 26° 19° January 6 Wednesday 6 rain in 6 of 20 yrs 6/20 26° 19° January 7 Thursday 7 rain in 7 of 20 yrs 7/20 26° 20° January 8 Friday 8 rain in 8 of 20 yrs 8/20 26° 19° January 9 Saturday 9 rain in 6 of 20 yrs 6/20 26° 20° 3-9 rain on 39% of days 26° 19°
January 10 Sunday 10 rain in 5 of 20 yrs 5/20 27° 20° January 11 Monday 11 rain in 9 of 20 yrs 9/20 28° 20° January 12 Tuesday 12 rain in 6 of 20 yrs 6/20 28° 20° January 13 Wednesday 13 rain in 6 of 20 yrs 6/20 27° 20° January 14 Thursday 14 rain in 6 of 20 yrs 6/20 28° 20° January 15 Friday 15 rain in 6 of 20 yrs 6/20 27° 20° January 16 Saturday 16 rain in 7 of 20 yrs 7/20 26° 20° 10-16 rain on 32% of days 27° 20°
January 17 Sunday 17 rain in 5 of 20 yrs 5/20 27° 19° January 18 Monday 18 rain in 8 of 20 yrs 8/20 28° 19° January 19 Tuesday 19 rain in 9 of 20 yrs 9/20 24° 19° January 20 Wednesday 20 rain in 7 of 20 yrs 7/20 27° 19° January 21 Thursday 21 rain in 8 of 20 yrs 8/20 28° 20° January 22 Friday 22 rain in 4 of 20 yrs 4/20 28° 20° January 23 Saturday 23 rain in 5 of 20 yrs 5/20 28° 21° 17-23 rain on 33% of days 27° 19°
January 24 Sunday 24 rain in 6 of 20 yrs 6/20 28° 20° January 25 Monday 25 rain in 4 of 20 yrs 4/20 27° 21° January 26 Tuesday 26 rain in 7 of 20 yrs 7/20 29° 21° January 27 Wednesday 27 rain in 8 of 20 yrs 8/20 26° 21° January 28 Thursday 28 rain in 5 of 20 yrs 5/20 27° 21° January 29 Friday 29 rain in 5 of 20 yrs 5/20 27° 20° January 30 Saturday 30 rain in 6 of 20 yrs 6/20 29° 21° 24-30 rain on 29% of days 27° 21°
January 31 Sunday 31 rain in 5 of 20 yrs 5/20 28° 20°
January 31 rain on 25% of days 28° 20°
1-2 rain on 28% of days 27° 20° 3-9 rain on 39% of days 26° 19° 10-16 rain on 32% of days 27° 20° 17-23 rain on 33% of days 27° 19° 24-30 rain on 29% of days 27° 21° January 31 rain on 25% of days 28° 20°
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
January 1 Saturday 1 rain in 6 of 20 yrs 6/20 28° 19° January 1 rain on 30% of days 28° 19°
January 2 Sunday 2 rain in 5 of 20 yrs 5/20 26° 20° January 3 Monday 3 rain in 9 of 20 yrs 9/20 25° 20° January 4 Tuesday 4 rain in 10 of 20 yrs 10/20 27° 19° January 5 Wednesday 5 rain in 8 of 20 yrs 8/20 26° 19° January 6 Thursday 6 rain in 6 of 20 yrs 6/20 26° 19° January 7 Friday 7 rain in 7 of 20 yrs 7/20 26° 20° January 8 Saturday 8 rain in 8 of 20 yrs 8/20 26° 19° 2-8 rain on 38% of days 26° 19°
January 9 Sunday 9 rain in 6 of 20 yrs 6/20 26° 20° January 10 Monday 10 rain in 5 of 20 yrs 5/20 27° 20° January 11 Tuesday 11 rain in 9 of 20 yrs 9/20 28° 20° January 12 Wednesday 12 rain in 6 of 20 yrs 6/20 28° 20° January 13 Thursday 13 rain in 6 of 20 yrs 6/20 27° 20° January 14 Friday 14 rain in 6 of 20 yrs 6/20 28° 20° January 15 Saturday 15 rain in 6 of 20 yrs 6/20 27° 20° 9-15 rain on 31% of days 27° 20°
January 16 Sunday 16 rain in 7 of 20 yrs 7/20 26° 20° January 17 Monday 17 rain in 5 of 20 yrs 5/20 27° 19° January 18 Tuesday 18 rain in 8 of 20 yrs 8/20 28° 19° January 19 Wednesday 19 rain in 9 of 20 yrs 9/20 24° 19° January 20 Thursday 20 rain in 7 of 20 yrs 7/20 27° 19° January 21 Friday 21 rain in 8 of 20 yrs 8/20 28° 20° January 22 Saturday 22 rain in 4 of 20 yrs 4/20 28° 20° 16-22 rain on 34% of days 27° 19°
January 23 Sunday 23 rain in 5 of 20 yrs 5/20 28° 21° January 24 Monday 24 rain in 6 of 20 yrs 6/20 28° 20° January 25 Tuesday 25 rain in 4 of 20 yrs 4/20 27° 21° January 26 Wednesday 26 rain in 7 of 20 yrs 7/20 29° 21° January 27 Thursday 27 rain in 8 of 20 yrs 8/20 26° 21° January 28 Friday 28 rain in 5 of 20 yrs 5/20 27° 21° January 29 Saturday 29 rain in 5 of 20 yrs 5/20 27° 20° 23-29 rain on 29% of days 27° 21°
January 30 Sunday 30 rain in 6 of 20 yrs 6/20 29° 21° January 31 Monday 31 rain in 5 of 20 yrs 5/20 28° 20°
30-31 rain on 28% of days 28° 21°
January 1 rain on 30% of days 28° 19° 2-8 rain on 38% of days 26° 19° 9-15 rain on 31% of days 27° 20° 16-22 rain on 34% of days 27° 19° 23-29 rain on 29% of days 27° 21° 30-31 rain on 28% of days 28° 21°
Tap another date to change
2006 none
2007 1mm
2008 1mm
2009 none
2010 none
2011 none
2012 1mm
2013 none
2014 none
2015 15mm
2016 24mm
2017 1mm
2018 none
2019 none
2020 none
2021 5mm
2022 1mm
2023 26mm
2024 7mm
2025 none
Holidays in January (2027) January 1 New Year's DayJanuary 26 Australia DayJanuary 18 Birthday of Martin Luther King, Jr. 1 Local public holiday or break (busier, pricier)1 US holidays (flights fill up)
Day by day temperature i 16° 26° 35° 45° 1 8 15 22 29 31
Your trip dates, the past 20 years Trip dates January 1 (Fri) 2 (Sat) 3 (Sun) 4 (Mon) 5 (Tue) 6 (Wed) 7 (Thu) 8 (Fri) 9 (Sat) 10 (Sun) 11 (Mon) 12 (Tue) 13 (Wed) 14 (Thu) 15 (Fri) 16 (Sat) 17 (Sun) 18 (Mon) 19 (Tue) 20 (Wed) 21 (Thu) 22 (Fri) 23 (Sat) 24 (Sun) 25 (Mon) 26 (Tue) 27 (Wed) 28 (Thu) 29 (Fri) 30 (Sat) 31 (Sun) ~ January 1 (Fri) 2 (Sat) 3 (Sun) 4 (Mon) 5 (Tue) 6 (Wed) 7 (Thu) 8 (Fri) 9 (Sat) 10 (Sun) 11 (Mon) 12 (Tue) 13 (Wed) 14 (Thu) 15 (Fri) 16 (Sat) 17 (Sun) 18 (Mon) 19 (Tue) 20 (Wed) 21 (Thu) 22 (Fri) 23 (Sat) 24 (Sun) 25 (Mon) 26 (Tue) 27 (Wed) 28 (Thu) 29 (Fri) 30 (Sat) 31 (Sun) 1-7 8-14 15-21 22-end Whole month
You can also click two dates on the axis. Hover a cell to see that day's rain. By year Driest trips first
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Trip rain days Month rain days Tap a date to start, tap another to end. Each cell is that date in one year. '06 '07 '08 '09 '10 '11 '12 '13 '14 '15 '16 '17 '18 '19 '20 '21 '22 '23 '24 '25
of 20 Dates outside your trip are dimmed.
One row per year, one cell per day. 2009 had 2 rain days, 2022 had 16.
Sydney through the year Month High Low Rain days Rainfall Sea January 27° 20° 10 days 98mm 24° February 28° 20° 10 days 137mm 24° March 26° 19° 12 days 179mm 24° April 24° 15° 10 days 145mm 23° May 21° 13° 8 days 99mm 21° June 18° 10° 10 days 155mm 20° July 18° 9° 8 days 104mm 18° August 20° 10° 7 days 85mm 18° September Good 22° 12° 7 days 68mm 19° October Good 24° 15° 9 days 69mm 20° November Good 25° 17° 10 days 94mm 20° December 27° 18° 9 days 79mm 22°
Common questions Does it rain a lot in Sydney in January? Over the past 20 years January averaged 10 rain days (1 mm or more) out of 31. Individual years ran from 2 in the driest to 16 in the wettest.
What should I wear in Sydney in January? Days averaged 27°C and nights 20°C. Pack a compact umbrella, T-shirts, a light layer for the evenings, and sunscreen plus a hat.
Can you swim in Sydney in January? Sea surface temperature averaged 23.5°C in January, cool when you first get in. Year to year it ranged 22.8-23.9°C. Check local flags for waves and jellyfish on the day.
Is January a good time to visit Sydney? On warmth and rain days alone, Sydney's easiest months were September to November. January ranked 8 of 12.
Previous month Sydney in December Next month Sydney in February Whole year Sydney weather by month Where to go January Compare Compare with Honolulu