Rosetta, Australia experiences average highs of 17°C (63°F) and lows of 8°C (46°F) throughout the year. Rainfall is moderate, averaging about 9 rainy days per month. Sunshine is abundant, averaging about 9 hours per day. Average highs have stayed broadly stable across the available records.
Rosetta, Australia Weather & Climate 2026
Monthly climate averages for Rosetta, Australia. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Jul–Nov At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
6.4/10
Best: January, February
UV Index
5
Low
Temperature 17°C / 8°C
Feels Like 15°C / 6°C
Rainy Days 9
Rainfall 50 mm
Sunshine 9 h
Humidity 73%
Wind Speed 18 km/h
Dew Point 8°C
Frost Days 2 days
Hottest Month
23°C
January
Avg Low13°C
Rain6days
Coldest Month
4°C
July
Avg High12°C
Rain10days
Driest Month
6days
January
Avg High23°C
Avg Low13°C
Windiest Month
20 km/h
September (Gusts 54)
Sea Temperature
10°C – 20°C
Warmest water: January (
19.5°C
)
Worst Time to Visit
Consider avoiding June, July, August, September due to frequent rain.
Sun Position
Sunrise 07:41
Daylight 9h
Sunset 16:44
Live conditions—
Rosetta on the map · live conditions
Rosetta, Australia
- Continent
- Oceania
- Country
- Australia
- City
- Rosetta
- Population
- 2.7K
- Coordinates
- -42.82°, 147.25°
Seasonal Breakdown
Spring
Sep–Nov
Avg High 16°C
Avg Low 8°C
Rain 11 days/mo
Summer
Dec–Feb
Avg High 22°C
Avg Low 12°C
Rain 7 days/mo
2/3 best months
Autumn
Mar–May
Avg High 17°C
Avg Low 9°C
Rain 7 days/mo
Winter
Jun–Aug
Avg High 12°C
Avg Low 4°C
Rain 10 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 23°C / 13°C . Feb: 22°C / 12°C . Mar: 20°C / 11°C . Apr: 17°C / 9°C . May: 14°C / 6°C . Jun: 12°C / 5°C . Jul: 12°C / 4°C . Aug: 12°C / 4°C . Sep: 14°C / 6°C . Oct: 16°C / 7°C . Nov: 18°C / 9°C . Dec: 21°C / 11°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 42 mm. Feb: 33 mm. Mar: 40 mm. Apr: 39 mm. May: 49 mm. Jun: 47 mm. Jul: 44 mm. Aug: 59 mm. Sep: 53 mm. Oct: 72 mm. Nov: 64 mm. Dec: 54 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 65%. Feb: 66%. Mar: 70%. Apr: 75%. May: 79%. Jun: 84%. Jul: 81%. Aug: 79%. Sep: 73%. Oct: 71%. Nov: 70%. Dec: 66%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 18 km/h . Feb: 18 km/h . Mar: 17 km/h . Apr: 16 km/h . May: 16 km/h . Jun: 15 km/h . Jul: 17 km/h . Aug: 18 km/h . Sep: 20 km/h . Oct: 19 km/h . Nov: 19 km/h . Dec: 19 km/h .
Sunshine
Sunshine
Sunshine: Jan: 11h. Feb: 11h. Mar: 9h. Apr: 8h. May: 7h. Jun: 6h. Jul: 7h. Aug: 8h. Sep: 9h. Oct: 10h. Nov: 11h. Dec: 12h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 20°C . Feb: 19°C . Mar: 18°C . Apr: 16°C . May: 14°C . Jun: 12°C . Jul: 10°C . Aug: 10°C . Sep: 11°C . Oct: 13°C . Nov: 15°C . Dec: 17°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 8. Feb: UV 7. Mar: UV 6. Apr: UV 4. May: UV 2. Jun: UV 2. Jul: UV 2. Aug: UV 3. Sep: UV 4. Oct: UV 6. Nov: UV 7. Dec: UV 8.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending drier by about 15 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jan 2025 · 23°C | Jan · 23°C |
| Coldest month | Jul 2025 · 4°C | Jul · 4°C |
| Wettest month | Nov 2025 · 97 mm | Oct · 72 mm |
| Windiest month | Oct 2025 · 25 km/h | Sep · 20 km/h |
Month-by-Month Weather Table
January best
Excellent 
February best
Excellent March
Good April
Good May
Fair June
Fair July
Poor August
Fair September
Fair October
Fair November
Good December
Good | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January best | 23°C / 13°C | 22°C / 12°C | 6days (42 mm) Good | 11.3h Excellent | 65% Muggy | 7.6 Very High | Excellent | View Details |
| February best | 22°C / 12°C | 20°C / 11°C | 7days (33 mm) Good | 10.5h Excellent | 66% Muggy | 6.9 High | Excellent | View Details |
| March | 20°C / 11°C | 19°C / 10°C | 6days (40 mm) Good | 8.9h Good | 70% Muggy | 5.7 High | Good | View Details |
| April | 17°C / 9°C | 15°C / 7°C | 7days (39 mm) Good | 7.8h Good | 75% Muggy | 3.6 Moderate | Good | View Details |
| May | 14°C / 6°C | 11°C / 4°C | 9days (49 mm) Wet | 6.7h Fair | 79% Humid | 2.4 Moderate | Fair | View Details |
| June | 12°C / 5°C | 9°C / 2°C | 9days (47 mm) Wet | 6.2h Fair | 84% Humid | 1.8 Low | Fair | View Details |
| July | 12°C / 4°C | 9°C / 1°C | 10days (44 mm) Wet | 6.8h Fair | 81% Humid | 2.1 Moderate | Poor | View Details |
| August | 12°C / 4°C | 9°C / 2°C | 12days (59 mm) Wet | 7.8h Good | 79% Humid | 3 Moderate | Fair | View Details |
| September | 14°C / 6°C | 11°C / 3°C | 10days (53 mm) Wet | 9.1h Good | 73% Muggy | 4.3 Moderate | Fair | View Details |
| October | 16°C / 7°C | 14°C / 5°C | 11days (72 mm) Wet | 10h Excellent | 71% Muggy | 6 High | Fair | View Details |
| November | 18°C / 9°C | 17°C / 7°C | 11days (64 mm) Wet | 10.9h Excellent | 70% Muggy | 6.8 High | Good | View Details |
| December | 21°C / 11°C | 19°C / 9°C | 9days (54 mm) Wet | 11.9h Excellent | 66% Muggy | 7.7 Very High | Good | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Rosetta are January, February, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Rosetta, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Rosetta is January, with average daytime highs of 23°C (73°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Rosetta is July, with average overnight lows of 4°C (39°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Rosetta is October, averaging 72mm of precipitation across 11 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Rosetta runs through August, October, November, July, with the heaviest rainfall in August. Based on 10-year averages for Rosetta.
Rosetta receives approximately 108 sunshine hours per year. The sunniest month is December with around 12 hours. Based on climate data for Rosetta.
The least favorable months to visit Rosetta are June, July, August, September, primarily due to frequent rain. For the best conditions, consider January, February instead.
The annual average UV index in Rosetta is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Rosetta is 73%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Sea temperatures in Summer average 15°C (59°F), which most swimmers will find too cold without a wetsuit.
Rosetta rarely sees significant snowfall but does experience frost, averaging 2 frost days during the colder months.
Average wind speeds in Rosetta are 18 km/h (11 mph). The windiest month is September with peak winds reaching 20 km/h (12 mph) (gusts up to 54 km/h / 33 mph).
Rosetta averages 1 clear-sky days per month with overall cloud cover around 65%. The clearest skies occur in January.
The annual average dew point in Rosetta is 8°C (46°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Rosetta has a Oceanic climate, classified as Cfb under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Rosetta ranges from 6°C (43°F) to 15°C (59°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
June is not the best time to visit Rosetta, with a climate score of 5.1/10. Consider visiting during January, February instead for better conditions.
For June in Rosetta, pack Layered clothing, Light jacket, Umbrella, Comfortable walking shoes. With average highs of 12°C (53°F) and 9 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
Last updated: