Irvine weather in August: Irvine, California: normal highs, lows, rain and records for August
Irvine in August has a normal high of 90°F and a normal low of 62°F, a daily mean of 76°F, holding near 90°F all month. Measurable precipitation falls on 0 days in a normal August, 0.01 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 32°C and low of 17°C, 0 mm of precipitation in August.
- NOAA stationIrvine Ranch
- Station IDUSC00044303
- Location33.72°N 117.72°W
- Elevation540 ft (165 m)
- From the center4 miles
- Population318,683
- Jan 69° 49°
- Feb 71° 48°
- Mar 73° 50°
- Apr 76° 52°
- May 79° 56°
- Jun 83° 59°
- Jul 88° 62°
- Aug 90° 62°
- Sep 89° 62°
- Oct 84° 58°
- Nov 76° 53°
- Dec 68° 48°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Irvine in August?
The normal high is 90°F and the normal low 62°F, for a daily mean of 76.2°F. August is 1.2°F warmer than July and 0.9°F warmer than September. August is the warmest month of the year in Irvine and the 12th wettest. Across the month the normal high rises 2°F, from 89°F on August 1 to 91°F on August 31. From one year to the next August's mean temperature typically moves about 1.5°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 75°F and 78°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 1%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 89°F | 62°F | 1% | 1% |
| August 8 | 90°F | 62°F | 1% | 0% |
| August 15 | 90°F | 62°F | 0% | 0% |
| August 22 | 91°F | 62°F | 0% | 0% |
| August 31 | 91°F | 62°F | 1% | 1% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 26, coldest night August 10)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 89°F | 62°F | 1% | 1% | 13 h 50 min |
| August 2 | 90°F | 62°F | 1% | 1% | 13 h 50 min |
| August 3 | 90°F | 62°F | 1% | 0% | 13 h 50 min |
| August 4 | 90°F | 62°F | 1% | 0% | 13 h 50 min |
| August 5 | 90°F | 62°F | 1% | 0% | 13 h 40 min |
| August 6 | 90°F | 62°F | 1% | 0% | 13 h 40 min |
| August 7 | 90°F | 62°F | 1% | 0% | 13 h 40 min |
| August 8 | 90°F | 62°F | 1% | 0% | 13 h 40 min |
| August 9 | 90°F | 62°F | 1% | 0% | 13 h 40 min |
| August 10 | 90°F | 62°F | 1% | 0% | 13 h 40 min |
| August 11 | 90°F | 62°F | 0% | 0% | 13 h 30 min |
| August 12 | 90°F | 62°F | 0% | 0% | 13 h 30 min |
| August 13 | 90°F | 62°F | 0% | 0% | 13 h 30 min |
| August 14 | 90°F | 62°F | 0% | 0% | 13 h 30 min |
| August 15 | 90°F | 62°F | 0% | 0% | 13 h 30 min |
| August 16 | 90°F | 62°F | 0% | 0% | 13 h 20 min |
| August 17 | 90°F | 62°F | 0% | 0% | 13 h 20 min |
| August 18 | 90°F | 62°F | 0% | 0% | 13 h 20 min |
| August 19 | 91°F | 62°F | 0% | 0% | 13 h 20 min |
| August 20 | 91°F | 62°F | 0% | 0% | 13 h 20 min |
| August 21 | 91°F | 62°F | 0% | 0% | 13 h 20 min |
| August 22 | 91°F | 62°F | 0% | 0% | 13 h 10 min |
| August 23 | 91°F | 62°F | 0% | 0% | 13 h 10 min |
| August 24 | 91°F | 62°F | 0% | 0% | 13 h 10 min |
| August 25 | 91°F | 62°F | 0% | 0% | 13 h 10 min |
| August 26 | 91°F | 62°F | 0% | 0% | 13 h 10 min |
| August 27 | 91°F | 62°F | 1% | 0% | 13 h |
| August 28 | 91°F | 62°F | 1% | 0% | 13 h |
| August 29 | 91°F | 62°F | 1% | 1% | 13 h |
| August 30 | 91°F | 62°F | 1% | 1% | 13 h |
| August 31 | 91°F | 62°F | 1% | 1% | 13 h |
- Normal high
- 90°FAugust average
- Normal low
- 62°FAugust average
- Precipitation
- 0.01 inmonth total
- Days with precipitation
- fewer than 10.01 inch or more
- Days at 90°F or more
- 16
- Daylight
- 13 h 50 min to 13 hAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 31
- Sunshine
- 92%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00044303; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Irvine in August?
On a given August day the chance of 0.01 inch or more is 0% on average, highest around August 1 (1%). In all, 0.01 in falls on 0 days of a normal August.
In a normal August in Irvine, 16 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00044303.
What are the records for August in Irvine?
The August mean against the 1991-2020 normal of 76.2°F: 2021 75.9°F (−0.3), 2022 77.9°F (+1.7), 2023 73.1°F (−3.1), 2024 76.9°F (+0.7), 2025 76.5°F (+0.3), 2026 78.5°F (+2.3). 4 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 75.9°F | −0.3°F | 0.00 in |
| 2022 | 77.9°F | +1.7°F | 0.00 in |
| 2023 | 73.1°F | −3.1°F | 2.44 in |
| 2024 | 76.9°F | +0.7°F | 0.00 in |
| 2025 | 76.5°F | +0.3°F | 0.00 in |
| 2026 | 78.5°F | +2.3°F | 0.00 in |
Source: recent months: ACIS, station USC00044303. Records and recent months use complete months only.
How does August in Irvine compare across California?
Across the 219 places PlainClimate covers in California, August normal highs run from 63°F in Bodega to 109°F in Needles; Irvine's is 90°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.