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Now · 8:14 PM

Williamstown (SA) Weather & Hourly Forecast

Australia · South Australia

10°C

Mostly clear night

Feels like: 8°C

💧 Humidity 93% 🌡 Pressure 1026 hPa 💨 Wind 7 km/h 👁 Visibility 39.8 km ☁ Clouds 34% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Williamstown (SA)

Today

8:30 PM

Mostly clear night

10° 💧 None 💨 7 km/h H 93%1026 hPa

11:30 PM

Fog at night

8° 💧 None 💨 8 km/h H 97%1027 hPa

Tomorrow

2:30 AM

Mist at night

9° 💧 0.0 mm 💨 10 km/h H 98%1028 hPa

5:30 AM

Mostly cloudy night

9° 💧 0.0 mm 💨 12 km/h H 94%1029 hPa

8:30 AM

Sunny

11° 💧 None 💨 12 km/h H 74%1031 hPa

11:30 AM

Mostly cloudy

14° 💧 None 💨 12 km/h H 57%1030 hPa

2:30 PM

Mostly cloudy

14° 💧 None 💨 13 km/h H 62%1028 hPa

5:30 PM

Mostly sunny

11° 💧 None 💨 14 km/h H 72%1029 hPa

8:30 PM

Mostly clear night

8° 💧 None 💨 15 km/h H 80%1030 hPa

11:30 PM

Mostly cloudy night

7° 💧 None 💨 13 km/h H 85%1030 hPa

Tuesday

2:30 AM

Mostly cloudy night

7° 💧 None 💨 15 km/h H 81%1028 hPa

5:30 AM

Clear night

6° 💧 None 💨 13 km/h H 86%1028 hPa

8:30 AM

Sunny

10° 💧 None 💨 10 km/h H 75%1029 hPa

11:30 AM

Mostly cloudy

14° 💧 None 💨 5 km/h H 59%1028 hPa

2:30 PM

Mostly cloudy

15° 💧 None 💨 7 km/h H 62%1026 hPa

5:30 PM

Overcast

12° 💧 None 💨 9 km/h H 70%1027 hPa

Today

8:30 PM

Mostly clear night

10° 💧 None 💨 7 km/h H 93%1026 hPa

9:30 PM

Mostly clear night

9° 💧 None 💨 8 km/h H 95%1027 hPa

10:30 PM

Partly cloudy night

8° 💧 None 💨 7 km/h H 97%1027 hPa

11:30 PM

Fog at night

8° 💧 None 💨 8 km/h H 97%1027 hPa

Tomorrow

12:30 AM

Fog at night

8° 💧 None 💨 9 km/h H 97%1028 hPa

1:30 AM

Fog at night

8° 💧 None 💨 9 km/h H 97%1028 hPa

2:30 AM

Mist at night

9° 💧 None 💨 10 km/h H 98%1028 hPa

3:30 AM

Overcast night

10° 💧 0.0 mm 💨 12 km/h H 95%1027 hPa

4:30 AM

Mostly cloudy night

10° 💧 0.0 mm 💨 13 km/h H 93%1028 hPa

5:30 AM

Mostly cloudy night

9° 💧 0.0 mm 💨 12 km/h H 94%1029 hPa

6:30 AM

Mostly sunny

9° 💧 None 💨 14 km/h H 93%1029 hPa

7:30 AM

Sunny

9° 💧 None 💨 12 km/h H 87%1030 hPa

8:30 AM

Sunny

11° 💧 None 💨 12 km/h H 74%1031 hPa

9:30 AM

Partly cloudy

12° 💧 None 💨 15 km/h H 64%1031 hPa

10:30 AM

Partly cloudy

13° 💧 None 💨 15 km/h H 60%1030 hPa

11:30 AM

Mostly cloudy

14° 💧 None 💨 12 km/h H 57%1030 hPa

12:30 PM

Mostly cloudy

14° 💧 None 💨 13 km/h H 57%1030 hPa

1:30 PM

Mostly cloudy

14° 💧 None 💨 13 km/h H 59%1029 hPa

2:30 PM

Mostly cloudy

14° 💧 None 💨 13 km/h H 62%1028 hPa

3:30 PM

Mostly cloudy

13° 💧 None 💨 16 km/h H 67%1028 hPa

4:30 PM

Mostly cloudy

12° 💧 None 💨 16 km/h H 71%1028 hPa

5:30 PM

Mostly sunny

11° 💧 None 💨 14 km/h H 72%1029 hPa

6:30 PM

Clear night

9° 💧 None 💨 13 km/h H 79%1029 hPa

7:30 PM

Clear night

8° 💧 None 💨 15 km/h H 83%1030 hPa

8:30 PM

Mostly clear night

8° 💧 None 💨 15 km/h H 80%1030 hPa

9:30 PM

Partly cloudy night

8° 💧 None 💨 14 km/h H 82%1030 hPa

10:30 PM

Partly cloudy night

7° 💧 None 💨 13 km/h H 85%1030 hPa

11:30 PM

Mostly cloudy night

7° 💧 None 💨 13 km/h H 85%1030 hPa

Tuesday

12:30 AM

Overcast night

7° 💧 None 💨 15 km/h H 83%1029 hPa

1:30 AM

Overcast night

7° 💧 None 💨 16 km/h H 81%1029 hPa

2:30 AM

Mostly cloudy night

7° 💧 None 💨 15 km/h H 81%1028 hPa

3:30 AM

Clear night

6° 💧 None 💨 13 km/h H 83%1028 hPa

4:30 AM

Clear night

6° 💧 None 💨 14 km/h H 86%1028 hPa

5:30 AM

Clear night

6° 💧 None 💨 13 km/h H 86%1028 hPa

6:30 AM

Sunny

5° 💧 None 💨 12 km/h H 89%1028 hPa

7:30 AM

Sunny

7° 💧 None 💨 12 km/h H 82%1029 hPa

8:30 AM

Sunny

10° 💧 None 💨 10 km/h H 75%1029 hPa

9:30 AM

Sunny

12° 💧 None 💨 7 km/h H 68%1029 hPa

10:30 AM

Mostly sunny

13° 💧 None 💨 6 km/h H 63%1029 hPa

11:30 AM

Mostly cloudy

14° 💧 None 💨 5 km/h H 59%1028 hPa

12:30 PM

Mostly cloudy

15° 💧 None 💨 8 km/h H 58%1028 hPa

1:30 PM

Overcast

15° 💧 None 💨 7 km/h H 60%1027 hPa

2:30 PM

Mostly cloudy

15° 💧 None 💨 7 km/h H 62%1026 hPa

3:30 PM

Overcast

15° 💧 None 💨 8 km/h H 59%1026 hPa

4:30 PM

Overcast

14° 💧 None 💨 10 km/h H 64%1026 hPa

5:30 PM

Overcast

12° 💧 None 💨 9 km/h H 70%1027 hPa

6:30 PM

Overcast night

11° 💧 None 💨 13 km/h H 74%1028 hPa

7:30 PM

Overcast night

9° 💧 None 💨 16 km/h H 78%1030 hPa

8:30 PM

Overcast night

9° 💧 None 💨 18 km/h H 83%1030 hPa

9:30 PM

Overcast night

9° 💧 None 💨 18 km/h H 81%1030 hPa

10:30 PM

Overcast night

9° 💧 None 💨 19 km/h H 79%1030 hPa

11:30 PM

Mostly cloudy night

9° 💧 0.0 mm 💨 22 km/h H 83%1029 hPa

Wednesday

12:30 AM

Partly cloudy night

8° 💧 None 💨 21 km/h H 86%1030 hPa

1:30 AM

Partly cloudy night

9° 💧 None 💨 22 km/h H 84%1030 hPa

2:30 AM

Mostly clear night

8° 💧 None 💨 19 km/h H 83%1030 hPa

3:30 AM

Partly cloudy night

8° 💧 None 💨 16 km/h H 83%1030 hPa

4:30 AM

Mostly cloudy night

8° 💧 0.0 mm 💨 19 km/h H 88%1031 hPa

5:30 AM

Mostly cloudy night

8° 💧 0.0 mm 💨 23 km/h H 86%1032 hPa

6:30 AM

Mostly cloudy

7° 💧 0.0 mm 💨 24 km/h H 86%1034 hPa

7:30 AM

Mostly sunny

7° 💧 None 💨 23 km/h H 82%1035 hPa

8:30 AM

Sunny

8° 💧 None 💨 29 km/h H 65%1035 hPa

9:30 AM

Sunny

8° 💧 None 💨 29 km/h H 58%1036 hPa

12:30 PM

Partly cloudy

10° 💧 None 💨 25 km/h H 55%1035 hPa

3:30 PM

Partly cloudy

11° 💧 None 💨 24 km/h H 56%1035 hPa

6:30 PM

Mostly clear night

8° 💧 None 💨 20 km/h H 70%1036 hPa

9:30 PM

Mostly clear night

7° 💧 None 💨 25 km/h H 75%1039 hPa

Thursday

12:30 AM

Clear night

5° 💧 None 💨 25 km/h H 88%1039 hPa

3:30 AM

Clear night

4° 💧 None 💨 25 km/h H 94%1038 hPa

6:30 AM

Sunny

3° 💧 None 💨 25 km/h H 95%1038 hPa

9:30 AM

Sunny

8° 💧 None 💨 23 km/h H 77%1039 hPa

12:30 PM

Sunny

12° 💧 None 💨 18 km/h H 63%1038 hPa

3:30 PM

Sunny

13° 💧 None 💨 16 km/h H 58%1035 hPa

6:30 PM

Clear night

10° 💧 None 💨 19 km/h H 72%1036 hPa

9:30 PM

Clear night

8° 💧 None 💨 18 km/h H 96%1036 hPa

Friday

12:30 AM

Clear night

7° 💧 None 💨 17 km/h H 97%1035 hPa

3:30 AM

Clear night

7° 💧 None 💨 16 km/h H 92%1033 hPa

6:30 AM

Sunny

7° 💧 None 💨 14 km/h H 96%1034 hPa

9:30 AM

Sunny

12° 💧 None 💨 15 km/h H 81%1033 hPa

12:30 PM

Sunny

16° 💧 None 💨 12 km/h H 58%1030 hPa

3:30 PM

Mostly sunny

17° 💧 None 💨 8 km/h H 51%1028 hPa

6:30 PM

Mostly clear night

11° 💧 None 💨 8 km/h H 73%1027 hPa

9:30 PM

Partly cloudy night

11° 💧 None 💨 12 km/h H 68%1028 hPa

Saturday

12:30 AM

Clear night

11° 💧 None 💨 15 km/h H 75%1026 hPa

3:30 AM

Clear night

10° 💧 None 💨 14 km/h H 71%1024 hPa

6:30 AM

Sunny

10° 💧 None 💨 15 km/h H 60%1024 hPa

9:30 AM

Sunny

17° 💧 None 💨 14 km/h H 51%1024 hPa

3:30 PM

Mostly sunny

20° 💧 None 💨 10 km/h H 43%1019 hPa

9:30 PM

Overcast night

15° 💧 None 💨 12 km/h H 55%1018 hPa

Sunday

3:30 AM

Mostly clear night

16° 💧 None 💨 19 km/h H 54%1014 hPa

9:30 AM

Mostly sunny

17° 💧 None 💨 26 km/h H 63%1016 hPa

3:30 PM

Sunny

17° 💧 None 💨 17 km/h H 62%1016 hPa

9:30 PM

Clear night

9° 💧 None 💨 9 km/h H 86%1019 hPa

Monday

3:30 AM

Clear night

8° 💧 None 💨 8 km/h H 84%1018 hPa

9:30 AM

Partly cloudy

16° 💧 None 💨 12 km/h H 56%1019 hPa

3:30 PM

Light rain

14° 💧 None 💨 8 km/h H 84%1017 hPa

9:30 PM

Overcast night

12° 💧 None 💨 12 km/h H 96%1019 hPa

Tuesday

3:30 AM

Mostly cloudy night

9° 💧 None 💨 9 km/h H 98%1020 hPa

9:30 AM

Overcast

11° 💧 None 💨 17 km/h H 95%1024 hPa

3:30 PM

Partly cloudy

13° 💧 None 💨 8 km/h H 72%1022 hPa

9:30 PM

Clear night

6° 💧 None 💨 15 km/h H 86%1026 hPa

Wednesday

3:30 AM

Clear night

4° 💧 None 💨 9 km/h H 90%1026 hPa

9:30 AM

Partly cloudy

10° 💧 None 💨 9 km/h H 66%1028 hPa

3:30 PM

Mostly sunny

15° 💧 None 💨 4 km/h H 57%1024 hPa

9:30 PM

Clear night

6° 💧 None 💨 13 km/h H 90%1027 hPa

Thursday

3:30 AM

Clear night

4° 💧 None 💨 9 km/h H 92%1024 hPa

9:30 AM

Sunny

11° 💧 None 💨 15 km/h H 72%1023 hPa

3:30 PM

Sunny

18° 💧 None 💨 16 km/h H 51%1016 hPa

9:30 PM

Clear night

13° 💧 None 💨 20 km/h H 62%1014 hPa

Friday

3:30 AM

Mostly cloudy night

14° 💧 None 💨 23 km/h H 55%1008 hPa

9:30 AM

Mostly cloudy

15° 💧 None 💨 27 km/h H 83%1007 hPa

3:30 PM

Light rain

15° 💧 None 💨 31 km/h H 99%1002 hPa

9:30 PM

Clear night

12° 💧 None 💨 39 km/h H 83%1008 hPa

Saturday

3:30 AM

Overcast night

11° 💧 None 💨 28 km/h H 93%1010 hPa

9:30 AM

Light rain

12° 💧 None 💨 24 km/h H 89%1016 hPa

3:30 PM

Mostly cloudy

14° 💧 None 💨 18 km/h H 69%1016 hPa

9:30 PM

Clear night

9° 💧 None 💨 7 km/h H 94%1020 hPa

Sunday

3:30 AM

Clear night

9° 💧 None 💨 2 km/h H 80%1018 hPa

9:30 AM

Sunny

17° 💧 None 💨 16 km/h H 69%1018 hPa

3:30 PM

Partly cloudy

23° 💧 None 💨 20 km/h H 49%1014 hPa

9:30 PM

Overcast night

16° 💧 None 💨 18 km/h H 81%1014 hPa

Monday

3:30 AM

Mostly clear night

18° 💧 None 💨 25 km/h H 54%1008 hPa

9:30 AM

Mostly sunny

25° 💧 None 💨 36 km/h H 42%1006 hPa

In Williamstown (SA) and, more broadly, across South Australia: The evening will be characterized by mostly cloudy skies with cool temperatures settling around 12 degrees Celsius. Light southeast winds are expected, reaching up to 7 km/h with occasional gusts of 8 km/h. No precipitation is forecast for the next few hours, making for a relatively dry night. The weather remains stable, with minimal wind activity and temperatures unlikely to change significantly overnight. It will be a calm and cool evening, ideal for wrapping up the day comfortably.

15-Day Weather Outlook for Williamstown (SA)

TomorrowTomorrow

Partly cloudy 14°/5° 💧 None 💨 16 km/h

Tuesday, Sep 8Tue Sep 8

Mostly sunny 15°/7° 💧 None 💨 29 km/h

Wednesday, Sep 9Wed Sep 9

Partly cloudy 11°/3° 💧 0.8 mm 💨 29 km/h

Thursday, Sep 10Thu Sep 10

Sunny 13°/7° 💧 None 💨 23 km/h

Friday, Sep 11Fri Sep 11

Mostly sunny 17°/10° 💧 None 💨 15 km/h

Saturday, Sep 12Sat Sep 12

Mostly sunny 20°/15° 💧 None 💨 19 km/h

Sunday, Sep 13Sun Sep 13

Mostly sunny 17°/8° 💧 0.3 mm 💨 26 km/h

Monday, Sep 14Mon Sep 14

Light rain 16°/9° 💧 3.3 mm 💨 12 km/h

Tuesday, Sep 15Tue Sep 15

Overcast 13°/4° 💧 0.5 mm 💨 17 km/h

Wednesday, Sep 16Wed Sep 16

Partly cloudy 15°/4° 💧 None 💨 13 km/h

Thursday, Sep 17Thu Sep 17

Mostly cloudy 18°/11° 💧 0.0 mm 💨 23 km/h

Friday, Sep 18Fri Sep 18

Light rain 15°/11° 💧 3.9 mm 💨 39 km/h

Saturday, Sep 19Sat Sep 19

Light rain 14°/9° 💧 1.3 mm 💨 24 km/h

Sunday, Sep 20Sun Sep 20

Partly cloudy 23°/16° 💧 2.1 mm 💨 25 km/h

Monday, Sep 21Mon Sep 21

Mostly sunny 25°/25° 💧 None 💨 36 km/h

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Williamstown (SA)

Vertical axis: °C · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Williamstown (SA)

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 8:30 PM

PM2.5 Fine particles Good 0,8µg/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 1,7µg/m³

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

O₃ Ozone Good 55,0µg/m³

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

NO₂ Nitrogen dioxide Good 0,6µg/m³

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

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Williamstown (SA)

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 5,3Moderate 😊Good

Tomorrow UV 5,8Moderate 🙂Fair

Tuesday UV 6,4High 🙂Fair

Wednesday UV 6,6High 🙂Fair

Thursday UV 6,7High 🙂Fair

Friday UV 6,0High —Unavailable

Saturday UV 6,0High —Unavailable

Today's weather health advice Open today's recommendations.

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

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 Forecast for Williamstown (SA)

Vertical axis: km/h · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · WILLIAMSTOWN (SA), SOUTH AUSTRALIA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 9:30 PM–10:30 PM.

82/100Best-hour score

BEST TIME TONIGHT 9:30 PM–10:30 PM Astronomical darkness: 7:22 PM–5:01 AM

☁ Cloud cover 19% Real hourly forecast for the best viewing hour.

☾ Moonlight 29% Waning Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant -31° high at the best hour.

✦ Estimated visible meteors 0–1/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min5%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for Williamstown (SA) were last refreshed today at 8:13 PM. The current forecast period extends through 08/09/2026 at 5:30 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.