5-day weather forecast Sydney 21-07-2026

Weather forecast Sydney today 21.07.2026: overcast, temperature from 10 °C to 18 °C.

Precipitation probability 26%. Wind up to 5.81 m/s (gusts 8.14 m/s). Air humidity 55–86%, atmospheric pressure 770–773 mm Hg, UV index up to 3.9.

Sunrise 06:55
Sunset 17:08

First Quarter53% illuminated
Moonrise 10:47 · Moonset Does not set today

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Table

Tue, Jul 21, 2026

Wed, Jul 22 →

Forecast from 10 °C to 18 °C and precipitation

Temperature & Precipitation
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Temperature (°C)	12	12	12	11	11	10	10	10	11	11	15	16	18	18	18	18	17	16	16	15	15	15	14	14
Precipitation (mm/hr)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Cloud cover (%)	1	0	0	0	0	0	0	1	11	0	13	31	32	99	88	98	84	100	100	100	100	100	100	94
Rain chance (%)	11	10	11	11	11	11	11	11	10	10	5	5	5	13	12	15	14	19	21	21	23	24	26	25

Wind speed and direction

Wind & Wind gust
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Wind (m/s)	2.61	2.69	2.89	3.11	3.19	2.89	2.89	3	2.81	2.89	2.81	3.31	3.89	4.69	5.19	5.81	5.61	5.61	5.19	4.89	4.19	3.69	3.39	3.11
Wind gust (m/s)	4.61	4.83	5.14	5.56	5.75	5.22	5.33	5.53	4.53	3.81	3.36	3.86	4.56	5.56	6.33	7.22	7.33	8.11	8.14	8.03	7.06	6.47	6.06	5.5
Wind direction (°)	NW 319°	NW 318°	NW 311°	NW 305°	NW 309°	WNW 300°	WNW 303°	NW 305°	NW 307°	NW 321°	NNW 338°	N 2°	NNE 22°	NNE 32°	NE 39°	NE 41°	NE 40°	NE 39°	NNE 33°	NNE 23°	N 11°	N 357°	NNW 347°	NNW 345°

Air humidity

Humidity
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Humidity (%)	85	83	84	84	85	85	86	85	81	82	65	59	55	56	58	61	67	72	75	76	78	81	83	85

Atmospheric pressure

Pressure
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Pressure (mm Hg)	773	773	773	772	772	772	773	773	773	773	773	772	771	770	770	770	770	770	770	770	770	770	770	770

Ultraviolet index

UV Index
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
UV Index	0	0	0	0	0	0	0	0	0.4	1.2	2.4	3.6	3.9	3.3	2.2	1.1	0.3	0	0	0	0	0	0	0

Air quality & pollen

Air quality
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
PM2.5 (µg/m³)	17.3	19	20.4	21.1	21.7	22.5	24	28.8	33.4	32.9	34.8	20.1	15.8	14.2	13.5	13	13.2	15.8	16.5	15.4	14.5	14	14.1	15.1
PM10 (µg/m³)	19.6	21.2	22.6	23.5	24	25	26.3	30.3	34.7	34.8	36.6	24.6	20.7	19.2	18.5	18	18.1	20.5	20.7	18.8	17.4	16.4	16.2	17
Ozone (O₃) (µg/m³)	9	5	4	4	4	4	4	6	10	17	25	37	51	61	65	66	62	52	37	26	22	22	22	20
NO₂ (µg/m³)	45.8	47.5	47.3	45.9	44.3	42.7	40.8	39	37.9	36.9	34.1	27.5	19.1	13.3	11.5	12.3	15.5	22.8	32.4	39.1	40	37.9	36.2	36
SO₂ (µg/m³)	14	14.1	13.6	12.7	12	11.6	11.3	11.4	12.3	13.5	14.2	13.7	12.6	11.8	11.6	11.7	12	12.6	13.2	13.5	12.9	12	11	10.2
CO (µg/m³)	135	142	135	123	116	120	130	145	172	203	219	207	178	151	128	105	92	95	108	117	119	117	115	111

Tue, Jul 21, 2026

Wed, Jul 22 →

Frequently asked questions about the weather in Sydney

Today in Sydney the temperature ranges from 10 °C to 18 °C, wind up to 5.81 m/s. Check the detailed hourly forecast above for more information.

The precipitation probability in Sydney today is 26%. View the full multi-day forecast above to see the rain chances for each upcoming day.

The wind speed in Sydney today reaches up to 5.81 m/s with gusts up to 8.14 m/s. Check the detailed wind chart above for hourly wind data.

The air humidity in Sydney today ranges from 55% to 86%. View the humidity chart above for hourly details.

The UV index in Sydney today reaches up to 3.9. Check the UV index chart above for hourly values throughout the day.

The atmospheric pressure in Sydney today ranges from 770 to 773 mm Hg. View the pressure chart above for hourly readings.

Cloud cover in Sydney today reaches up to 100%. Check the cloud cover chart above for hourly details throughout the day.

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.

Learn more about our methodology →