5-day weather forecast Sydney Sep 12, 2026

17°13–18° · Sunny

Weather forecast Sydney today Sep 12, 2026: sunny, temperature from 13 °C to 18 °C.

Precipitation probability 23%. Wind up to 8 m/s (gusts 10 m/s). Air humidity 65–86%, atmospheric pressure 770–773 mm Hg, UV index up to 6.9.

Sunrise 05:58
Sunset 17:44
New Moon3% illuminated
Moonrise 06:13 · Moonset 18:51
Chart
Table
Sat, Sep 12, 2026

Forecast from 13 °C to 18 °C and precipitation

Temperature & Precipitation
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Temperature (°C)151514141413131314151617171717181818171717171616
Precipitation (mm/hr)0.0100.02000000000000000000000

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Cloud cover (%)7820581055553750000355514897803999
Rain chance (%)2011191212121211127546766779211891323

Wind speed and direction

Wind & Wind gust
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Wind (m/s)2.812.1932.612.693.53.693.894.113.52.52.695.196.6176.816.56.6187.817.54.193.693.31
Wind gust (m/s)5.816.1975.612.723.53.834.114.197.53.723.429.196.617.257.697.898.729.89109.727.536.945.72
Wind direction (°)WSW 251°WNW 293°WSW 254°W 278°WNW 283°WNW 291°WNW 295°WNW 297°WNW 287°WNW 293°NNW 338°NE 41°ENE 72°ENE 70°ENE 64°ENE 63°ENE 63°NE 54°NE 42°NE 35°NNE 27°N 359°NNW 334°NW 322°

Air humidity

Humidity
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Humidity (%)808084868686868579726665707371717274777878787979

Atmospheric pressure

Pressure
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Pressure (mm Hg)773773773773773773773773773773773772771770770770770770770770771771771770

Ultraviolet index

UV Index
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
UV Index00000000.31.32.94.96.46.96.24.62.71.10.2000000

Air quality & pollen

Air quality
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
PM2.5 (µg/m³)28.930.228.126.323.722.824.328.73431.423.42120.721.12120.219.117.816.815.914.613.110.410.1
PM10 (µg/m³)35.435.531.728.625.12425.429.935.536.329.727.627.528.528.728.12725.323.722.420.518.513.812.8
Ozone (O₃) (µg/m³)231814119871121344656657277797870594944403733
NO₂ (µg/m³)33.13636.936.535.634.633.230.927.423.119.115.712.710.48.98.18.510.914.517.318.318.518.920
SO₂ (µg/m³)6.26.76.86.76.87.27.88.810.612.713.81311.29.89.298.99.29.69.89.38.57.97.8
CO (µg/m³)1501571491361341601982182011661361191079892908887888888888889
Sat, Sep 12, 2026

Frequently asked questions about the 5-day weather in Sydney

What will the weather be like in Sydney over the next 5 days?

Over the next 5 days in Sydney the temperature is expected to range from about 12 to 22 °C. See the detailed hourly forecast for each of the 5 days in the charts above.

On which of the next 5 days will it rain in Sydney?

The chance of rain in Sydney over the next 5 days reaches 61%. Check the 5-day precipitation chart above to see exactly which days and hours bring rain.

How accurate is the 5-day weather forecast for Sydney?

A 5-day forecast is fairly reliable: the first 2–3 days are usually very accurate, while days 4–5 may be refined. The data is updated several times a day, so check back before important plans.

Which of the next 5 days in Sydney will be the warmest and which the coolest?

Over the next 5 days the temperature in Sydney ranges from about 12 to 22 °C. Compare the warmest and coolest day on the temperature chart above.

Will it be windy in Sydney over the next 5 days?

Over the next 5 days the wind in Sydney picks up to 16 m/s. The windiest days are easy to spot on the wind chart above.

Which day of the week in Sydney is best for a walk or a trip?

For a walk or a trip, pick the days with the lowest chance of rain (up to 61%) and light wind — easy to compare on the 5-day charts above.

How can I best use the 5-day forecast for Sydney?

The first 2–3 days are reliable enough for firm decisions, while days 4–5 are a guide that sharpens as they approach. The forecast is updated several times a day, so check again before important plans.

Will I need an umbrella or sunscreen in Sydney this week?

Rain reaches a 61% chance across the next 5 days, so pack something waterproof for the wettest of them — the daily strip above shows which. Today’s UV index peaks at 6.9; sunscreen is worth it from about 3 upwards.

Sydney on the map

Data Sources & Methodology

Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.