Oceanside weather in August: Oceanside, California: normal highs, lows, rain and records for August
Oceanside in August has a normal high of 78°F and a normal low of 62°F, a daily mean of 70°F, holding near 78°F all month. Measurable precipitation falls on 1 days in a normal August, 0.04 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 26°C and low of 17°C, 1 mm of precipitation in August.
- NOAA stationOceanside Municipal Airport
- Station IDUSW00053121
- Location33.22°N 117.35°W
- Elevation28 ft (9 m)
- From the center3 miles
- Population170,941
- Jan 67° 41°
- Feb 66° 42°
- Mar 66° 46°
- Apr 69° 48°
- May 70° 54°
- Jun 73° 58°
- Jul 77° 62°
- Aug 78° 62°
- Sep 78° 59°
- Oct 75° 53°
- Nov 71° 44°
- Dec 66° 40°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Oceanside in August?
The normal high is 78°F and the normal low 62°F, for a daily mean of 70.2°F. August is 0.9°F warmer than July and 1.7°F warmer than September. August is the warmest month of the year in Oceanside and the 12th wettest. Across the month the normal high rises 1°F, from 78°F on August 1 to 79°F on August 31. From one year to the next August's mean temperature typically moves about 2.1°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 68°F and 72°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 3%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 78°F | 63°F | 2% | 0% |
| August 8 | 78°F | 63°F | 2% | 0% |
| August 15 | 78°F | 62°F | 2% | 0% |
| August 22 | 79°F | 62°F | 2% | 0% |
| August 31 | 79°F | 61°F | 3% | 0% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 27, coldest night August 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 78°F | 63°F | 2% | 0% | 13 h 50 min |
| August 2 | 78°F | 63°F | 2% | 0% | 13 h 50 min |
| August 3 | 78°F | 63°F | 2% | 0% | 13 h 50 min |
| August 4 | 78°F | 63°F | 2% | 0% | 13 h 40 min |
| August 5 | 78°F | 63°F | 2% | 0% | 13 h 40 min |
| August 6 | 78°F | 63°F | 2% | 0% | 13 h 40 min |
| August 7 | 78°F | 63°F | 2% | 0% | 13 h 40 min |
| August 8 | 78°F | 63°F | 2% | 0% | 13 h 40 min |
| August 9 | 78°F | 63°F | 2% | 0% | 13 h 40 min |
| August 10 | 78°F | 63°F | 2% | 0% | 13 h 30 min |
| August 11 | 78°F | 63°F | 2% | 0% | 13 h 30 min |
| August 12 | 78°F | 63°F | 2% | 0% | 13 h 30 min |
| August 13 | 78°F | 62°F | 2% | 0% | 13 h 30 min |
| August 14 | 78°F | 62°F | 2% | 0% | 13 h 30 min |
| August 15 | 78°F | 62°F | 2% | 0% | 13 h 30 min |
| August 16 | 78°F | 62°F | 2% | 0% | 13 h 20 min |
| August 17 | 78°F | 62°F | 2% | 0% | 13 h 20 min |
| August 18 | 79°F | 62°F | 2% | 0% | 13 h 20 min |
| August 19 | 79°F | 62°F | 2% | 0% | 13 h 20 min |
| August 20 | 79°F | 62°F | 2% | 0% | 13 h 20 min |
| August 21 | 79°F | 62°F | 2% | 0% | 13 h 10 min |
| August 22 | 79°F | 62°F | 2% | 0% | 13 h 10 min |
| August 23 | 79°F | 62°F | 2% | 0% | 13 h 10 min |
| August 24 | 79°F | 61°F | 2% | 0% | 13 h 10 min |
| August 25 | 79°F | 61°F | 2% | 0% | 13 h 10 min |
| August 26 | 79°F | 61°F | 2% | 0% | 13 h |
| August 27 | 79°F | 61°F | 2% | 0% | 13 h |
| August 28 | 79°F | 61°F | 2% | 0% | 13 h |
| August 29 | 79°F | 61°F | 2% | 0% | 13 h |
| August 30 | 79°F | 61°F | 3% | 0% | 13 h |
| August 31 | 79°F | 61°F | 3% | 0% | 13 h |
- Normal high
- 78°FAugust average
- Normal low
- 62°FAugust average
- Precipitation
- 0.04 inmonth total
- Days with precipitation
- 10.01 inch or more
- 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
- 9
- Sunshine
- 92%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00053121; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Oceanside in August?
On a given August day the chance of 0.01 inch or more is 2% on average, highest around August 31 (3%). In all, 0.04 in falls on 1 days of a normal August.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00053121.
What are the records for August in Oceanside?
The warmest August temperature on this station's record (since 1999) is 93°F, on August 30, 2013; the coldest is 50°F, on August 26, 2009. The wettest August brought 2.25 in (2023).
The August mean against the 1991-2020 normal of 70.2°F: 2021 70.7°F (+0.5), 2022 72.8°F (+2.6), 2023 71.7°F (+1.5), 2024 71.6°F (+1.4), 2025 70.3°F (+0.1), 2026 74.0°F (+3.8). 6 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 70.7°F | +0.5°F | 0.04 in |
| 2022 | 72.8°F | +2.6°F | 0.00 in |
| 2023 | 71.7°F | +1.5°F | 2.25 in |
| 2024 | 71.6°F | +1.4°F | 0.00 in |
| 2025 | 70.3°F | +0.1°F | 0.01 in |
| 2026 | 74.0°F | +3.8°F | 0.00 in |
Source: records: ACIS, station USW00053121; recent months: ACIS, station USW00053121. Records and recent months use complete months only.
How does August in Oceanside 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; Oceanside's is 78°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.