Cairns weather in August
In August, Cairns sees average daytime highs of 23°C and overnight lows near 17°C, with 24 mm of rain across 5.5 wet days and about 11.4 hours of daylight. It is the 10th-warmest and 11th-wettest month of the year here.
Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 44% of the time in August, and the air most often feels humid.
Daylight stretches from about 11 h 12 min at the start of August to 11 h 36 min by month's end. Set against the rest of the year, August is Cairns's 3rd-clearest and 5th-windiest month. For the whole year in context, see Cairns's year-round climate.
- Daytime high
- 23°
- 10th warmest
- Overnight low
- 17°
- 2nd coldest
- Rainfall
- 24 mm
- 5.5 wet days
- Daylight
- 11 h 24 min
- 6:38 AM – 6:04 PM
- Cloud cover
- 45%
- 3rd clearest
- Wind
- 12 km/h
- 5th windiest
- Solar energy
- 4.81 kWh/m²
- Travel score
- 7.7
- out of 10
Cairns is city in Queensland, Australia.
- Density
- 314/km²
- people per km²
- Founded
- 1876
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in August
Day-to-day highs hold fairly steady near 23°C through the month.
A typical August day in Cairns reaches about 23°C in the afternoon and slips back to 17°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 24°C. Set against its neighbours, August runs on par with July and about 2°C cooler than September.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 |
| Avg low (°C) | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 22 | 17 |
| 2 | 22 | 17 |
| 3 | 22 | 17 |
| 4 | 22 | 17 |
| 5 | 22 | 17 |
| 6 | 22 | 17 |
| 7 | 22 | 17 |
| 8 | 22 | 17 |
| 9 | 22 | 17 |
| 10 | 22 | 17 |
| 11 | 22 | 17 |
| 12 | 22 | 17 |
| 13 | 22 | 17 |
| 14 | 23 | 17 |
| 15 | 23 | 17 |
| 16 | 23 | 17 |
| 17 | 23 | 17 |
| 18 | 23 | 17 |
| 19 | 23 | 17 |
| 20 | 23 | 17 |
| 21 | 23 | 17 |
| 22 | 23 | 17 |
| 23 | 23 | 17 |
| 24 | 23 | 17 |
| 25 | 23 | 17 |
| 26 | 23 | 18 |
| 27 | 23 | 18 |
| 28 | 23 | 18 |
| 29 | 23 | 18 |
| 30 | 23 | 18 |
| 31 | 24 | 18 |
How August really feels in Cairns
Once humidity and wind are folded in, August averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Cairns weather by month
How August compares with the rest of the year at a glance. August is the 10th-warmest and 11th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 28° / 23° | 246 | 21.3 | 12.9 | 4.2 |
| Feb | 28° / 24° | 254 | 20.7 | 12.6 | 4.0 |
| Mar | 28° / 23° | 206 | 17.9 | 12.1 | 5.2 |
| Apr | 26° / 21° | 94 | 12.7 | 11.6 | 6.3 |
| May | 24° / 20° | 41 | 9.5 | 11.2 | 7.1 |
| Jun | 23° / 18° | 27 | 7 | 11 | 7.4 |
| Jul | 22° / 17° | 27 | 5.9 | 11.1 | 7.5 |
| Aug | 23° / 17° | 24 | 5.5 | 11.4 | 7.7 |
| Sep | 24° / 18° | 14 | 4.1 | 11.9 | 8.2 |
| Oct | 26° / 20° | 32 | 6.5 | 12.4 | 7.6 |
| Nov | 27° / 22° | 57 | 10.4 | 12.8 | 6.6 |
| Dec | 28° / 23° | 142 | 16.1 | 13 | 5.2 |
Cloud cover in August
The sky is clear or mostly clear about 44% of the time in August.
Beyond those clear spells, partly cloudy skies cover about 24% of August, with mostly cloudy or overcast conditions the remaining 32%.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 67 | 67 | 67 | 67 | 67 | 67 | 68 | 68 | 68 | 68 | 68 | 68 | 68 | 68 | 68 | 68 | 67 | 67 | 67 | 67 | 67 | 67 | 67 | 67 | 68 | 68 | 68 | 68 | 69 | 69 | 70 |
| Cloudier (%) | 33 | 33 | 33 | 33 | 33 | 33 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 32 | 32 | 32 | 32 | 31 | 31 | 30 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 67 | 33 |
| 2 | 67 | 33 |
| 3 | 67 | 33 |
| 4 | 67 | 33 |
| 5 | 67 | 33 |
| 6 | 67 | 33 |
| 7 | 68 | 32 |
| 8 | 68 | 32 |
| 9 | 68 | 32 |
| 10 | 68 | 32 |
| 11 | 68 | 32 |
| 12 | 68 | 32 |
| 13 | 68 | 32 |
| 14 | 68 | 32 |
| 15 | 68 | 32 |
| 16 | 68 | 32 |
| 17 | 67 | 33 |
| 18 | 67 | 33 |
| 19 | 67 | 33 |
| 20 | 67 | 33 |
| 21 | 67 | 33 |
| 22 | 67 | 33 |
| 23 | 67 | 33 |
| 24 | 67 | 33 |
| 25 | 68 | 32 |
| 26 | 68 | 32 |
| 27 | 68 | 32 |
| 28 | 68 | 32 |
| 29 | 69 | 31 |
| 30 | 69 | 31 |
| 31 | 70 | 30 |
Chance of precipitation in August
Cairns gets around 24 mm of rain over 5.5 wet days in August. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 18% and peaks near 19% on the wettest days.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 18 | 18 |
| Rain chance (%) | |
|---|---|
| 1 | 17 |
| 2 | 17 |
| 3 | 16 |
| 4 | 16 |
| 5 | 16 |
| 6 | 16 |
| 7 | 16 |
| 8 | 17 |
| 9 | 17 |
| 10 | 17 |
| 11 | 17 |
| 12 | 17 |
| 13 | 17 |
| 14 | 18 |
| 15 | 18 |
| 16 | 18 |
| 17 | 18 |
| 18 | 18 |
| 19 | 18 |
| 20 | 18 |
| 21 | 18 |
| 22 | 18 |
| 23 | 19 |
| 24 | 19 |
| 25 | 19 |
| 26 | 19 |
| 27 | 18 |
| 28 | 18 |
| 29 | 18 |
| 30 | 18 |
| 31 | 18 |
Humidity in August
Most of August feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, August lands in the humid band about 45% of days. Sticky, muggy-or-worse air turns up on roughly 9% of them.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 13 | 12 | 11 | 10 | 10 | 9 | 8 | 8 | 7 | 7 | 6 | 6 | 6 | 5 | 5 |
| Comfortable (%) | 36 | 36 | 36 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 36 | 36 | 36 | 35 | 34 | 33 | 32 | 32 | 30 | 30 | 29 | 28 | 27 | 27 | 26 | 25 |
| Humid (%) | 42 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 42 | 42 | 42 | 42 | 43 | 43 | 43 | 44 | 45 | 45 | 46 | 47 | 48 | 49 | 49 | 49 | 50 | 50 | 50 | 50 | 50 | 51 |
| Muggy (%) | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 10 | 11 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 18 |
| Oppressive (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 15 | 36 | 42 | 7 | 0 |
| 2 | 16 | 36 | 41 | 7 | 0 |
| 3 | 16 | 36 | 41 | 7 | 0 |
| 4 | 16 | 37 | 41 | 6 | 0 |
| 5 | 16 | 37 | 41 | 6 | 0 |
| 6 | 16 | 37 | 41 | 6 | 0 |
| 7 | 16 | 37 | 41 | 6 | 0 |
| 8 | 16 | 37 | 41 | 6 | 0 |
| 9 | 16 | 37 | 41 | 5 | 0 |
| 10 | 15 | 37 | 42 | 5 | 0 |
| 11 | 15 | 37 | 42 | 5 | 0 |
| 12 | 15 | 37 | 42 | 5 | 0 |
| 13 | 15 | 37 | 42 | 6 | 0 |
| 14 | 14 | 37 | 43 | 6 | 0 |
| 15 | 14 | 37 | 43 | 6 | 0 |
| 16 | 13 | 36 | 43 | 7 | 0 |
| 17 | 13 | 36 | 44 | 7 | 0 |
| 18 | 12 | 36 | 45 | 8 | 0 |
| 19 | 11 | 35 | 45 | 8 | 0 |
| 20 | 10 | 34 | 46 | 9 | 0 |
| 21 | 10 | 33 | 47 | 10 | 0 |
| 22 | 9 | 32 | 48 | 11 | 0 |
| 23 | 8 | 32 | 49 | 11 | 0 |
| 24 | 8 | 30 | 49 | 12 | 0 |
| 25 | 7 | 30 | 49 | 13 | 0 |
| 26 | 7 | 29 | 50 | 14 | 1 |
| 27 | 6 | 28 | 50 | 15 | 1 |
| 28 | 6 | 27 | 50 | 16 | 1 |
| 29 | 6 | 27 | 50 | 17 | 1 |
| 30 | 5 | 26 | 50 | 18 | 1 |
| 31 | 5 | 25 | 51 | 18 | 1 |
Wind in August
Winds average 12 km/h in August.
Across August, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 12 | light breeze |
| 2 | 12 | light breeze |
| 3 | 12 | light breeze |
| 4 | 12 | light breeze |
| 5 | 12 | light breeze |
| 6 | 12 | light breeze |
| 7 | 12 | light breeze |
| 8 | 12 | light breeze |
| 9 | 12 | light breeze |
| 10 | 12 | calm |
| 11 | 12 | calm |
| 12 | 12 | calm |
| 13 | 12 | calm |
| 14 | 12 | calm |
| 15 | 12 | calm |
| 16 | 12 | calm |
| 17 | 12 | calm |
| 18 | 12 | calm |
| 19 | 12 | calm |
| 20 | 12 | calm |
| 21 | 12 | calm |
| 22 | 12 | calm |
| 23 | 12 | calm |
| 24 | 12 | calm |
| 25 | 11 | calm |
| 26 | 11 | calm |
| 27 | 11 | calm |
| 28 | 11 | calm |
| 29 | 11 | calm |
| 30 | 11 | calm |
| 31 | 11 | calm |
Sunrise & sunset in August
Daylight runs from about 11 h 12 min at the start of August to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 24 minutes over August. Sunrise moves from 6:46 AM to 6:27 AM, and sunset from 6:00 PM to 6:06 PM.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.2 | 11.2 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 |
| Sunrise (AM) | 6:46 | 6:46 | 6:45 | 6:45 | 6:44 | 6:44 | 6:43 | 6:43 | 6:42 | 6:42 | 6:41 | 6:41 | 6:40 | 6:39 | 6:39 | 6:38 | 6:38 | 6:37 | 6:36 | 6:36 | 6:35 | 6:34 | 6:34 | 6:33 | 6:32 | 6:31 | 6:31 | 6:30 | 6:29 | 6:28 | 6:27 |
| Sunset (PM) | 6:00 | 6:00 | 6:01 | 6:01 | 6:01 | 6:01 | 6:02 | 6:02 | 6:02 | 6:02 | 6:03 | 6:03 | 6:03 | 6:03 | 6:04 | 6:04 | 6:04 | 6:04 | 6:04 | 6:05 | 6:05 | 6:05 | 6:05 | 6:05 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.2 | 6:46 | 6:00 |
| 2 | 11.2 | 6:46 | 6:00 |
| 3 | 11.3 | 6:45 | 6:01 |
| 4 | 11.3 | 6:45 | 6:01 |
| 5 | 11.3 | 6:44 | 6:01 |
| 6 | 11.3 | 6:44 | 6:01 |
| 7 | 11.3 | 6:43 | 6:02 |
| 8 | 11.3 | 6:43 | 6:02 |
| 9 | 11.3 | 6:42 | 6:02 |
| 10 | 11.3 | 6:42 | 6:02 |
| 11 | 11.4 | 6:41 | 6:03 |
| 12 | 11.4 | 6:41 | 6:03 |
| 13 | 11.4 | 6:40 | 6:03 |
| 14 | 11.4 | 6:39 | 6:03 |
| 15 | 11.4 | 6:39 | 6:04 |
| 16 | 11.4 | 6:38 | 6:04 |
| 17 | 11.4 | 6:38 | 6:04 |
| 18 | 11.5 | 6:37 | 6:04 |
| 19 | 11.5 | 6:36 | 6:04 |
| 20 | 11.5 | 6:36 | 6:05 |
| 21 | 11.5 | 6:35 | 6:05 |
| 22 | 11.5 | 6:34 | 6:05 |
| 23 | 11.5 | 6:34 | 6:05 |
| 24 | 11.5 | 6:33 | 6:05 |
| 25 | 11.6 | 6:32 | 6:06 |
| 26 | 11.6 | 6:31 | 6:06 |
| 27 | 11.6 | 6:31 | 6:06 |
| 28 | 11.6 | 6:30 | 6:06 |
| 29 | 11.6 | 6:29 | 6:06 |
| 30 | 11.6 | 6:28 | 6:06 |
| 31 | 11.6 | 6:27 | 6:06 |
Solar energy in August
Average shortwave solar energy reaching the ground each day in August, about 4.81 kWh/m².
For context, solar energy here swings from a low near 3.82 kWh/m² to a high of 6.68 kWh/m² in November across the year — August's 4.81 kWh/m² falls in the middle.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.4 | 4.5 | 4.5 | 4.5 | 4.5 | 4.6 | 4.6 | 4.6 | 4.7 | 4.7 | 4.7 | 4.7 | 4.8 | 4.8 | 4.8 | 4.8 | 4.9 | 4.9 | 4.9 | 4.9 | 5.0 | 5.0 | 5.0 | 5.1 | 5.1 | 5.1 | 5.2 | 5.2 | 5.2 | 5.3 | 5.3 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.4 | Bright |
| 2 | 4.5 | Bright |
| 3 | 4.5 | Bright |
| 4 | 4.5 | Bright |
| 5 | 4.5 | Bright |
| 6 | 4.6 | Bright |
| 7 | 4.6 | Bright |
| 8 | 4.6 | Bright |
| 9 | 4.7 | Bright |
| 10 | 4.7 | Bright |
| 11 | 4.7 | Bright |
| 12 | 4.7 | Bright |
| 13 | 4.8 | Bright |
| 14 | 4.8 | Bright |
| 15 | 4.8 | Bright |
| 16 | 4.8 | Bright |
| 17 | 4.9 | Bright |
| 18 | 4.9 | Bright |
| 19 | 4.9 | Bright |
| 20 | 4.9 | Bright |
| 21 | 5.0 | Bright |
| 22 | 5.0 | Bright |
| 23 | 5.0 | Bright |
| 24 | 5.1 | Bright |
| 25 | 5.1 | Bright |
| 26 | 5.1 | Bright |
| 27 | 5.2 | Bright |
| 28 | 5.2 | Bright |
| 29 | 5.2 | Bright |
| 30 | 5.3 | Bright |
| 31 | 5.3 | Bright |
Hazard calendar for Cairns
None of Cairns's seasonal hazards are active in August. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Cairns sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Cairns's monsoon runs December–March, when most of the year's rain falls.
Is August a good time to visit Cairns?
Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
August is one of the better times to visit Cairns for general sightseeing.
What to pack for Cairns in August
From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In August, Cairns sees daytime highs around 23°C and nights near 17°C. Worth packing: light clothes and sun protection. About 6 days see rain.
Sea temperature near Cairns in August
The nearest coast averages about 24°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 13 km away) is warmest in February at about 29°C and coldest in July near 24°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 29 | 29 | 28 | 27 | 26 | 24 | 24 | 24 | 25 | 26 | 27 | 29 |
| Comfort | Tropical | Tropical | Tropical | Warm | Warm | Warm | Refreshing | Refreshing | Warm | Warm | Warm | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 29 | Tropical |
| Feb | 29 | Tropical |
| Mar | 28 | Tropical |
| Apr | 27 | Warm |
| May | 26 | Warm |
| Jun | 24 | Warm |
| Jul | 24 | Refreshing |
| Aug | 24 | Refreshing |
| Sep | 25 | Warm |
| Oct | 26 | Warm |
| Nov | 27 | Warm |
| Dec | 29 | Tropical |
UV index in Cairns in August
Clear-sky midday UV in August peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Cairns peaks around February 11 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 8 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 16 | 16 | 14 | 12 | 9 | 8 | 8 | 10 | 13 | 13 | 13 | 14 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 16 | Extreme |
| Feb | 16 | Extreme |
| Mar | 14 | Extreme |
| Apr | 12 | Extreme |
| May | 9 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 10 | Very high |
| Sep | 13 | Extreme |
| Oct | 13 | Extreme |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Where is Cairns?
Cairns sits at 16.9°S, 145.8°E, 7 m above sea level, in Australia. The nearest listed city is Port Douglas, 58 km away.
Topography around Cairns
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Cairns.
Within 3 km, the terrain around Cairns has only modest variations in elevation — a maximum elevation change of 39 m around an average of 5 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,180 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,561 m.
The land around Cairns is covered by artificial surfaces (44%) and water (24%) within 3 km, trees (50%) and water (26%) within 16 km, and water (43%) and trees (40%) within 80 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
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 Cairns (-16.9237°, 145.7661°, elevation 7 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).