5-day weather forecast Sydney 21-07-2026

Weather forecast Sydney Tuesday, July 21 21.07.2026: overcast, temperature from 10 °C to 18 °C.

Precipitation probability 27%. Wind up to 5.39 m/s (gusts 8.67 m/s). Air humidity 60–86%, atmospheric pressure 770–773 mm Hg, UV index up to 3.6.

Sunrise 06:55
Sunset 17:08

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

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Table

← Mon, Jul 20

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	11	11	11	11	11	10	11	13	14	16	17	18	18	17	17	16	16	16	15	15	15	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 (%)	0	1	4	10	36	100	100	100	99	49	34	38	98	100	32	100	99	100	100	100	100	53	37	32
Rain chance (%)	11	12	12	12	15	27	27	27	25	12	8	7	14	14	6	16	18	20	22	23	24	15	14	14

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	2.81	2.69	2.81	3	3.11	2.89	2.61	2.61	2.69	3.11	3.69	4.39	5.11	5.31	5.39	5.31	5.39	5.31	4.89	4.61	4.5	4.11
Wind gust (m/s)	4.61	4.75	4.89	4.78	5	5.33	5.53	5.28	4.31	3.53	3.33	3.72	4.39	5.31	6.22	6.61	7.14	7.89	8.67	8.61	8.17	7.78	7.56	7.06
Wind direction (°)	NW 317°	NW 313°	NW 304°	NW 307°	NW 307°	NW 305°	NW 309°	NW 307°	NW 309°	NW 316°	NNW 327°	N 2°	NNE 21°	NNE 32°	NE 37°	NE 38°	NE 38°	NE 35°	NNE 29°	NNE 22°	NNE 18°	N 10°	N 1°	N 349°

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	86	86	86	86	86	86	86	82	76	69	63	60	60	62	64	69	74	77	78	80	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	773	772	773	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	1.1	2.2	3.3	3.6	3.1	2.1	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)	16.9	19	20.4	20.8	20.4	19.7	19.2	20.2	21.4	20.8	17.9	13.2	11	10.7	10.7	10.7	11	14.2	15	14	13	12.4	12.6	13.7
PM10 (µg/m³)	19.3	21.2	22.7	23.1	22.9	22.4	21.9	23.1	24.3	23.6	21.4	16.6	14.3	14.1	14	14	14.2	17.2	17.4	16.2	15	14.3	14.3	15.1
Ozone (O₃) (µg/m³)	9	5	3	3	4	4	5	8	14	22	31	41	52	59	62	61	57	46	31	20	16	15	15	13
NO₂ (µg/m³)	47.8	50.1	49.9	48.2	45.9	43.5	40.5	36.7	31.6	25.8	20.5	15.8	11.7	9.5	9.5	11.4	15.7	24.6	35.9	44	45.9	44.5	43	42.6
SO₂ (µg/m³)	17.3	17.6	17.3	16.6	15.6	14.4	13	11.7	10.8	10.1	9.4	8.4	7.3	6.9	7.4	8.5	9.9	11.8	14	15.5	16.1	16	15.5	14.3
CO (µg/m³)	133	138	128	110	100	103	112	127	153	184	196	172	129	97	88	89	94	104	117	127	128	126	123	120

← Mon, Jul 20

Tue, Jul 21, 2026

Wed, Jul 22 →

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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.

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