Byron Bay weather in January

In January, Byron Bay sees average daytime highs of 27°C and overnight lows near 21°C, with 140 mm of rain across 13.6 wet days and about 13.6 hours of daylight. It is the 1st-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 32% of the time in January, and the air most often feels muggy.

Daylight stretches from about 13 h 48 min at the start of January to 13 h 24 min by month's end. Set against the rest of the year, January is Byron Bay's 11th-clearest and 4th-windiest month. For the whole year in context, see Byron Bay's year-round climate.

Daytime high
27°
1st warmest
Overnight low
21°
12th coldest
Rainfall
140 mm
13.6 wet days
Daylight
13 h 36 min
6:06 AM – 7:44 PM
Cloud cover
56%
11th clearest
Wind
13 km/h
4th windiest
Solar energy
6.77 kWh/m²
Travel score
6.0
out of 10

Byron Bay is town in New South Wales, Australia.

Density
1/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical January day in Byron Bay reaches about 27°C in the afternoon and slips back to 21°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 31°C. Set against its neighbours, January runs on par with December and on par with February.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12721
22721
32721
42721
52721
62721
72721
82721
92721
102721
112721
122721
132721
142721
152721
162721
172821
182821
192821
202821
212821
222821
232822
242822
252822
262822
272822
282822
292822
302822
312822

Byron Bay weather by month

How January compares with the rest of the year at a glance. January is the 1st-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 21°14013.613.66.0
Feb27° / 21°13813.7135.7
Mar26° / 20°12815.312.26.0
Apr24° / 17°7812.511.36.6
May22° / 14°8710.410.66.8
Jun20° / 12°1029.710.26.5
Jul19° / 11°50710.47.0
Aug20° / 11°556.4117.4
Sep22° / 14°406.811.87.6
Oct24° / 16°789.512.77.3
Nov25° / 18°10411.113.46.7
Dec27° / 20°10912.513.86.2

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 22% of January, with mostly cloudy or overcast conditions the remaining 45%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25644
35644
45545
55545
65644
75644
85644
95545
105545
115545
125545
135644
145545
155545
165644
175644
185545
195545
205545
215545
225446
235446
245347
255347
265347
275347
285347
295248
305248
315347

Chance of precipitation in January

Any precipitation

Byron Bay gets around 140 mm of rain over 13.6 wet days in January, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 43% and peaks near 50% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
142
242
341
441
541
641
741
841
941
1041
1141
1241
1341
1441
1541
1641
1741
1841
1942
2043
2144
2244
2345
2446
2547
2647
2748
2849
2949
3049
3150

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

Most of January feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, January lands in the muggy band about 44% of days. Sticky, muggy-or-worse air turns up on roughly 71% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
117304417
217304518
317294518
417294519
507284519
607284520
707284521
807274521
907274522
1007274422
1107264423
1207264423
1307254424
1407254325
1507244326
1607244326
1707234327
1806234328
1906224329
2006214330
2105204431
2205204432
2304194432
2404184533
2503184534
2603184534
2702184534
2802184634
2902184634
3002184634
3101194633

Wind in January

Winds average 13 km/h in January.

Across January, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 13 h 48 min at the start of January to 13 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over January. Sunrise moves from 5:55 AM to 6:18 AM, and sunset from 7:43 PM to 7:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:557:43
213.85:557:43
313.85:567:43
413.85:577:43
513.85:577:43
613.85:587:44
713.75:597:44
813.76:007:44
913.76:007:44
1013.76:017:44
1113.76:027:44
1213.76:037:44
1313.76:037:44
1413.76:047:44
1513.76:057:44
1613.66:067:44
1713.66:067:44
1813.66:077:44
1913.66:087:44
2013.66:097:44
2113.66:107:43
2213.56:107:43
2313.56:117:43
2413.56:127:43
2513.56:137:42
2613.56:147:42
2713.56:147:42
2813.46:157:41
2913.46:167:41
3013.46:177:40
3113.46:187:40

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 6.77 kWh/m².

For context, solar energy here swings from a low near 2.92 kWh/m² to a high of 6.81 kWh/m² in December across the year — January's 6.77 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.1Intense
27.1Intense
37.1Intense
47.1Intense
57.0Intense
67.0Intense
77.0Intense
86.9Intense
96.9Intense
106.8Intense
116.8Intense
126.8Intense
136.7Intense
146.7Intense
156.7Intense
166.7Intense
176.6Intense
186.6Intense
196.6Intense
206.5Intense
216.5Intense
226.5Intense
236.5Intense
246.4Intense
256.4Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.2Intense
316.2Intense
Planning a trip in January

Hazard calendar for Byron Bay

In seasonPeak

In January, Byron Bay sits inside its cyclone season. The full year is below, with each hazard's peak months called out.

Byron Bay sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Cyclone
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is January a good time to visit Byron Bay?

Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.0
Sightseeing
10th-best month of the year
6.2
Beach & pool
2nd-best month of the year

January is a reasonable time to visit Byron Bay for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Byron Bay in January

From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In January, Byron Bay sees daytime highs around 27°C and nights near 21°C. Pack light clothes and sun protection. Worth having: rain gear. About 14 days see rain.

light clothessun protectionrain gear

Sea temperature near Byron Bay in January

The nearest coast averages about 26°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in February at about 26°C and coldest in August near 21°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°22°24°26°28°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar26Warm
Apr25Warm
May24Refreshing
Jun22Refreshing
Jul21Refreshing
Aug21Refreshing
Sep21Refreshing
Oct22Refreshing
Nov24Refreshing
Dec25Warm

UV index in Byron Bay in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Byron Bay peaks around January 21 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 21UV 13Jun 18UV 4
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar11Extreme
Apr8Very high
May5Moderate
Jun4Moderate
Jul4Moderate
Aug6High
Sep7Very high
Oct10Very high
Nov11Extreme
Dec13Extreme
Location & terrain

Where is Byron Bay?

Byron Bay sits at 28.6°S, 153.6°E, 0 m above sea level, in Australia. The nearest listed city is Banora Point, 49 km away.

Topography around Byron Bay

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Byron Bay.

Within 3 km, the terrain around Byron Bay has only modest variations in elevation — a maximum elevation change of 91 m around an average of 8 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 263 m; within 80 km, large variations in elevation — a maximum elevation change of 1,197 m.

The land around Byron Bay is covered by water (40%) and trees (38%) within 3 km, water (58%) and trees (22%) within 16 km, and water (39%) and trees (38%) within 80 km.

3 km
91 m
16 km
263 m
80 km
1,197 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
January weather nearby: Banora Point 49 km · Palm Beach 61 km · Robina 68 km · Surfers Paradise 74 km · Gold Coast 74 km · Nerang 78 km · Southport 79 km · Labrador 81 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
none 38%Roman Catholic 20%Protestant 18%other Christian 4%

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 Byron Bay (-28.6499°, 153.6125°, elevation 0 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).