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Now · 4:22 PM

O'Sullivan Beach Weather & Hourly Forecast

Australia · South Australia · 5166

Partly cloudy
16°C
Partly cloudy
Feels like: 15°C
💧 Humidity 71% 🌡 Pressure 1019 hPa 💨 Wind 13 km/h 👁 Visibility 10.0 km Clouds 44% ☀️ UV index 0.6 · Low 🌅 Sunrise 6:33 AM 🌇 Sunset 5:58 PM

Hourly Weather Forecast for O'Sullivan Beach

Today
Partly cloudy · 4:30 PM Partly cloudy
16° 💧 None 💨 13 km/h H 71%1019 hPa
Partly cloudy night · 7:30 PM Partly cloudy night
15° 💧 None 💨 7 km/h H 74%1020 hPa
Mostly cloudy night · 10:30 PM Mostly cloudy night
12° 💧 None 💨 4 km/h H 76%1022 hPa
Tomorrow
Mostly cloudy night · 1:30 AM Mostly cloudy night
12° 💧 None 💨 7 km/h H 76%1020 hPa
Mostly clear night · 4:30 AM Mostly clear night
11° 💧 None 💨 12 km/h H 81%1018 hPa
Mostly cloudy · 7:30 AM Mostly cloudy
13° 💧 None 💨 17 km/h H 78%1017 hPa
Overcast · 10:30 AM Overcast
14° 💧 None 💨 8 km/h H 80%1017 hPa
Overcast · 1:30 PM Overcast
17° 💧 None 💨 15 km/h H 69%1013 hPa
Overcast · 4:30 PM Overcast
17° 💧 0.3 mm 💨 20 km/h H 77%1010 hPa
Light rain · 7:30 PM Light rain
17° 💧 1.1 mm 💨 39 km/h H 69%1010 hPa
Light rain · 10:30 PM Light rain
15° 💧 6.2 mm 💨 30 km/h H 92%1009 hPa
Saturday
Overcast night · 1:30 AM Overcast night
15° 💧 0.3 mm 💨 32 km/h H 94%1008 hPa
Light rain · 4:30 AM Light rain
14° 💧 1.7 mm 💨 43 km/h H 85%1009 hPa
Light rain · 7:30 AM Light rain
13° 💧 1.4 mm 💨 41 km/h H 84%1011 hPa
Light rain · 10:30 AM Light rain
13° 💧 0.1 mm 💨 38 km/h H 74%1014 hPa
Sunny · 1:30 PM Sunny
14° 💧 None 💨 37 km/h H 66%1014 hPa

In O'Sullivan Beach and, more broadly, across South Australia: As the afternoon progresses into the evening, the sky remains mostly cloudy with cool temperatures ranging from 13 degrees Celsius to 15 degrees Celsius. Light southeast winds, reaching a maximum of 5 km/h with gusts up to 5 km/h, will continue to be gentle. No precipitation is expected during this time, making for a relatively dry evening. Temperatures will gradually settle as the night approaches, maintaining a cool and calm atmosphere. It should be a quiet evening with little wind and no rain, providing comfortable conditions for outdoor activities or relaxing indoors.

15-Day Weather Forecast for O'Sullivan Beach

TomorrowTomorrow Moderate rain Moderate rain 17°/10° 💧 5.2 mm 💨 40 km/h
Saturday, Sep 5Sat Sep 5 Light rain Light rain 15°/11° 💧 3.9 mm 💨 46 km/h
Sunday, Sep 6Sun Sep 6 Mostly cloudy Mostly cloudy 13°/11° 💧 None 💨 15 km/h
Monday, Sep 7Mon Sep 7 Light rain Light rain 15°/ 💧 0.2 mm 💨 22 km/h
Tuesday, Sep 8Tue Sep 8 Overcast Overcast 16°/ 💧 None 💨 22 km/h
Wednesday, Sep 9Wed Sep 9 Overcast Overcast 16°/10° 💧 None 💨 22 km/h
Thursday, Sep 10Thu Sep 10 Sunny Sunny 18°/ 💧 None 💨 17 km/h
Friday, Sep 11Fri Sep 11 Overcast Overcast 20°/13° 💧 None 💨 20 km/h
Saturday, Sep 12Sat Sep 12 Light rain Light rain 21°/18° 💧 0.1 mm 💨 24 km/h
Sunday, Sep 13Sun Sep 13 Light rain Light rain 20°/15° 💧 2.5 mm 💨 41 km/h
Monday, Sep 14Mon Sep 14 Light rain Light rain 15°/11° 💧 0.8 mm 💨 32 km/h
Tuesday, Sep 15Tue Sep 15 Sunny Sunny 13°/ 💧 None 💨 14 km/h
Wednesday, Sep 16Wed Sep 16 Light rain Light rain 12°/ 💧 4.7 mm 💨 30 km/h
Thursday, Sep 17Thu Sep 17 Light rain Light rain 13°/ 💧 7.4 mm 💨 42 km/h
Friday, Sep 18Fri Sep 18 Mostly sunny Mostly sunny 15°/11° 💧 None 💨 33 km/h

TEMPERATURE OUTLOOK

Hourly Temperature and Weather Conditions in O'Sullivan Beach

Vertical axis: °C · Color based on temperature
Partly cloudy at 4:30 PM
60° Today 4:30 PM
Partly cloudy at 5:30 PM
60° 5:30 PM
Partly cloudy night at 6:30 PM
59° 6:30 PM
Partly cloudy night at 7:30 PM
58° 7:30 PM
Partly cloudy night at 8:30 PM
55° Today 8:30 PM
Partly cloudy night at 9:30 PM
54° 9:30 PM
Mostly cloudy night at 10:30 PM
53° 10:30 PM
Mostly cloudy night at 11:30 PM
53° 11:30 PM
Mostly cloudy night at 12:30 AM
54° Tomorrow 12:30 AM
Mostly cloudy night at 1:30 AM
53° 1:30 AM
Mostly cloudy night at 2:30 AM
52° 2:30 AM
Mostly cloudy night at 3:30 AM
51° 3:30 AM
Mostly clear night at 4:30 AM
51° Tomorrow 4:30 AM
Mostly clear night at 5:30 AM
51° 5:30 AM
Partly cloudy night at 6:30 AM
52° 6:30 AM
Mostly cloudy at 7:30 AM
55° 7:30 AM
Mostly cloudy at 8:30 AM
58° Tomorrow 8:30 AM
Mostly cloudy at 9:30 AM
59° 9:30 AM
Overcast at 10:30 AM
57° 10:30 AM
Overcast at 11:30 AM
58° 11:30 AM
Overcast at 12:30 PM
59° Tomorrow 12:30 PM
Overcast at 1:30 PM
63° 1:30 PM
Overcast at 2:30 PM
62° 2:30 PM
Overcast at 3:30 PM
62° 3:30 PM
Overcast at 4:30 PM
62° Tomorrow 4:30 PM
Light rain at 5:30 PM
62° 5:30 PM
Light rain at 6:30 PM
62° 6:30 PM
Light rain at 7:30 PM
63° 7:30 PM
Light rain at 8:30 PM
60° Tomorrow 8:30 PM
Light rain at 9:30 PM
59° 9:30 PM
Light rain at 10:30 PM
59° 10:30 PM
Heavy rain at 11:30 PM
58° 11:30 PM
Light rain at 12:30 AM
58° Saturday 12:30 AM
Overcast night at 1:30 AM
58° 1:30 AM
Overcast night at 2:30 AM
58° 2:30 AM
Light rain at 3:30 AM
58° 3:30 AM
Light rain at 4:30 AM
57° Saturday 4:30 AM
Light rain at 5:30 AM
55° 5:30 AM
Light rain at 6:30 AM
55° 6:30 AM
Light rain at 7:30 AM
55° 7:30 AM
Light rain at 8:30 AM
54° Saturday 8:30 AM
Light rain at 9:30 AM
54° 9:30 AM
Light rain at 10:30 AM
55° 10:30 AM
Mostly sunny at 11:30 AM
56° 11:30 AM
Mostly sunny at 12:30 PM
56° Saturday 12:30 PM
Sunny at 1:30 PM
56° 1:30 PM
Mostly sunny at 2:30 PM
56° 2:30 PM
Mostly sunny at 3:30 PM
56° 3:30 PM
Mostly sunny at 4:30 PM
56° Saturday 4:30 PM
Mostly sunny at 5:30 PM
55° 5:30 PM
Partly cloudy night at 6:30 PM
55° 6:30 PM
Partly cloudy night at 7:30 PM
55° 7:30 PM
Mostly cloudy night at 8:30 PM
54° Saturday 8:30 PM
Mostly cloudy night at 9:30 PM
54° 9:30 PM
Mostly clear night at 10:30 PM
53° 10:30 PM
Clear night at 11:30 PM
53° 11:30 PM
Clear night at 12:30 AM
53° Sunday 12:30 AM
Clear night at 1:30 AM
52° 1:30 AM
Mostly clear night at 2:30 AM
52° 2:30 AM
Mostly clear night at 3:30 AM
52° 3:30 AM
Overcast night at 4:30 AM
52° Sunday 4:30 AM
Overcast night at 5:30 AM
53° 5:30 AM
Overcast at 6:30 AM
52° 6:30 AM
Overcast at 7:30 AM
52° 7:30 AM
Overcast at 8:30 AM
53° Sunday 8:30 AM
Overcast at 9:30 AM
54° 9:30 AM
Partly cloudy at 10:30 AM
55° 10:30 AM
Mostly cloudy at 11:30 AM
55° 11:30 AM
Mostly cloudy at 12:30 PM
55° Sunday 12:30 PM
Mostly cloudy at 1:30 PM
56° 1:30 PM
Partly cloudy at 2:30 PM
56° 2:30 PM
Partly cloudy at 3:30 PM
57° 3:30 PM
Sunny at 4:30 PM
56° Sunday 4:30 PM
Sunny at 5:30 PM
55° 5:30 PM
Clear night at 6:30 PM
53° 6:30 PM
Clear night at 7:30 PM
52° 7:30 PM
Clear night at 8:30 PM
52° Sunday 8:30 PM
Clear night at 9:30 PM
51° 9:30 PM
Partly cloudy night at 10:30 PM
51° 10:30 PM
Mostly cloudy night at 11:30 PM
51° 11:30 PM
Mostly cloudy night at 12:30 AM
51° Monday 12:30 AM
Mostly cloudy night at 1:30 AM
50° 1:30 AM
Overcast night at 2:30 AM
50° 2:30 AM
Overcast night at 3:30 AM
50° 3:30 AM
Overcast night at 4:30 AM
50° Monday 4:30 AM
Overcast night at 5:30 AM
51° 5:30 AM
Overcast at 6:30 AM
51° 6:30 AM
Overcast at 7:30 AM
51° 7:30 AM
Mostly cloudy at 8:30 AM
55° Monday 8:30 AM
Mostly cloudy at 9:30 AM
57° 9:30 AM
Mostly sunny at 10:30 AM
59° 10:30 AM
Mostly cloudy at 11:30 AM
61° 11:30 AM
Partly cloudy at 12:30 PM
62° Monday 12:30 PM
Partly cloudy at 1:30 PM
62° 1:30 PM
Partly cloudy at 2:30 PM
62° 2:30 PM
Partly cloudy at 3:30 PM
62° 3:30 PM

AIR QUALITY FORECAST

Air Quality in O'Sullivan Beach

Hourly forecast · Updated every 2 hours
Fair
Nearest forecast value 4:30 PM
PM2.5 Fine particles Good 2,2µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 10,5µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 68,3µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 0,1µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

Sun exposure and health risks in O'Sullivan Beach

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.
0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme
Today UV 6,2High 🙂Fair
Tomorrow UV 3,8Moderate 🙂Fair
Saturday UV 5,6Moderate 🙂Fair
Sunday UV 5,4Moderate 🙂Fair
Monday UV 5,0Moderate 🙂Fair
Tuesday UV 4,0Moderate Unavailable
Wednesday UV 5,0Moderate Unavailable
Hourly UV index today
5:00 PMUV 0,1 6:00 PMUV 0,0 7:00 PMUV 0,0
Today's weather health advice Open today's recommendations.

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Speed in O'Sullivan Beach

Vertical axis: km/h · Horizontal axis: hours
Hourly wind speed Chart of sustained wind and maximum gusts in km/h. Today 4:30 PM 5:30 PM 6:30 PM 7:30 PM Today 8:30 PM 9:30 PM 10:30 PM 11:30 PM Tomorrow 12:30 AM 1:30 AM 2:30 AM 3:30 AM Tomorrow 4:30 AM 5:30 AM 6:30 AM 7:30 AM Tomorrow 8:30 AM 9:30 AM 10:30 AM 11:30 AM Tomorrow 12:30 PM 1:30 PM 2:30 PM 3:30 PM Tomorrow 4:30 PM 5:30 PM 6:30 PM 7:30 PM Tomorrow 8:30 PM 9:30 PM 10:30 PM 11:30 PM Saturday 12:30 AM 1:30 AM 2:30 AM 3:30 AM Saturday 4:30 AM 5:30 AM 6:30 AM 7:30 AM Saturday 8:30 AM 9:30 AM 10:30 AM 11:30 AM Saturday 12:30 PM 1:30 PM 2:30 PM 3:30 PM Saturday 4:30 PM 5:30 PM 6:30 PM 7:30 PM Saturday 8:30 PM 9:30 PM 10:30 PM 11:30 PM Sunday 12:30 AM 1:30 AM 2:30 AM 3:30 AM Sunday 4:30 AM 5:30 AM 6:30 AM 7:30 AM Sunday 8:30 AM 9:30 AM 10:30 AM 11:30 AM Sunday 12:30 PM 1:30 PM 2:30 PM 3:30 PM Sunday 4:30 PM 5:30 PM 6:30 PM 7:30 PM Sunday 8:30 PM 9:30 PM 10:30 PM 11:30 PM Monday 12:30 AM 1:30 AM 2:30 AM 3:30 AM Monday 4:30 AM 5:30 AM 6:30 AM 7:30 AM Monday 8:30 AM 9:30 AM 10:30 AM 11:30 AM Monday 12:30 PM 1:30 PM 2:30 PM 3:30 PM
Sustained wind Max gusts
Internal PR simulation: 3.75 Population: 1,844

Forecast data for O'Sullivan Beach were last refreshed today at 4:22 PM. The current forecast period extends through 05/09/2026 at 1:30 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.