Byron Bay weather in January
January in Byron Bay: warm, rainy, with clean air — one of the best months to visit.
#1 of 12 months in Byron Bay · #145 of 897 destinations to visit in January · comfort 87/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Byron Bay in January
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Byron Bay climate normals — January
| Daytime high | 27°C / 81°F | 🌤 warm |
|---|---|---|
| Nighttime low | 22°C / 71°F | |
| Rainfall | 103 mm / 4.1 in | 🌧 rainy |
| Rainy days | 14 days | |
| Humidity | 80% | 💦 very humid |
| Dew point | 19°C / 67°F | |
| Sunshine | 11.4 h/day | |
| Daylight | 13.7 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 33 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Byron Bay in January — FAQ
- Is January a good time to visit Byron Bay?
- January in Byron Bay: warm, rainy, with clean air — one of the best months to visit. It ranks #1 of 12 months for Byron Bay on SeasonMap's comfort score (87/100).
- What is the weather like in Byron Bay in January?
- In January, Byron Bay averages a daily high of 27°C and a low of 21.8°C, with about 103.2 mm of rain over roughly 13.6 rainy days.
- What is the air quality in Byron Bay in January?
- Byron Bay has a mean US Air Quality Index of about 33 in January.