Oakley weather in May
In May, Oakley sees average daytime highs of 76°F and overnight lows near 54°F, with 0.6 in of rain across 3 wet days and about 14 hours of daylight. It is the 5th-warmest and 8th-wettest month of the year here.
Highs climb over the month, from about 75°F in the first days to 78°F by the end. The sky is clear or mostly clear about 59% of the time in May, and the air most often feels dry.
Daylight stretches from about 13 h 36 min at the start of May to 14 h 24 min by month's end. Set against the rest of the year, May is Oakley's 6th-clearest and 3rd-windiest month. For the whole year in context, see Oakley's year-round climate.
- Daytime high
- 76°
- 5th warmest
- Overnight low
- 54°
- 8th coldest
- Rainfall
- 0.6 in
- 3 wet days
- Daylight
- 14 hours
- 5:02 AM – 7:05 PM
- Cloud cover
- 35%
- 6th clearest
- Wind
- 8 mph
- 3rd windiest
- Solar energy
- 7.33 kWh/m²
- Travel score
- 8.5
- out of 10
Oakley is city in Contra Costa County, California, United States.
- Density
- 950/km²
- people per km²
- Founded
- 1999
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in May
Highs climb over the month, from about 75°F in the first days to 78°F by the end.
A typical May day in Oakley reaches about 76°F in the afternoon and slips back to 54°F overnight — a 22°F spread between the day's warmth and the night's chill. On most days the high lands between 67°F and 87°F. Set against its neighbours, May runs about 6°F warmer than April and about 5°F cooler than June.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 74 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 77 | 77 | 77 | 77 | 77 | 78 | 78 | 78 | 78 | 78 | 79 |
| Avg low (°F) | 53 | 53 | 53 | 53 | 53 | 53 | 53 | 53 | 53 | 53 | 53 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 56 | 56 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 74 | 53 |
| 2 | 75 | 53 |
| 3 | 75 | 53 |
| 4 | 75 | 53 |
| 5 | 75 | 53 |
| 6 | 75 | 53 |
| 7 | 75 | 53 |
| 8 | 75 | 53 |
| 9 | 75 | 53 |
| 10 | 75 | 53 |
| 11 | 75 | 53 |
| 12 | 76 | 54 |
| 13 | 76 | 54 |
| 14 | 76 | 54 |
| 15 | 76 | 54 |
| 16 | 76 | 54 |
| 17 | 76 | 54 |
| 18 | 76 | 54 |
| 19 | 76 | 54 |
| 20 | 76 | 55 |
| 21 | 77 | 55 |
| 22 | 77 | 55 |
| 23 | 77 | 55 |
| 24 | 77 | 55 |
| 25 | 77 | 55 |
| 26 | 78 | 55 |
| 27 | 78 | 55 |
| 28 | 78 | 55 |
| 29 | 78 | 55 |
| 30 | 78 | 56 |
| 31 | 79 | 56 |
Oakley weather by month
How May compares with the rest of the year at a glance. May is the 5th-warmest and 8th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 57° / 43° | 3.7 | 9 | 9.7 | 4.2 |
| Feb | 61° / 45° | 3.5 | 8.8 | 10.5 | 5.2 |
| Mar | 66° / 48° | 2.7 | 8.3 | 11.7 | 6.4 |
| Apr | 70° / 50° | 1.2 | 4.7 | 13 | 7.6 |
| May | 76° / 54° | 0.6 | 3 | 14 | 8.5 |
| Jun | 82° / 57° | 0.1 | 0.7 | 14.6 | 8.3 |
| Jul | 84° / 59° | 0.0 | 0.2 | 14.4 | 7.7 |
| Aug | 84° / 59° | 0.1 | 0.2 | 13.5 | 7.7 |
| Sep | 82° / 58° | 0.0 | 0.3 | 12.3 | 8.3 |
| Oct | 76° / 54° | 0.9 | 2.8 | 11 | 8.6 |
| Nov | 65° / 47° | 1.8 | 5.4 | 9.9 | 6.6 |
| Dec | 57° / 43° | 3.4 | 8.4 | 9.4 | 4.3 |
Cloud cover in May
The sky is clear or mostly clear about 59% of the time in May.
Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 26%. Skies tend to open up as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 69 | 69 | 70 | 70 | 70 | 70 | 71 | 71 | 71 | 71 | 71 | 71 | 72 | 72 | 72 | 73 | 73 | 74 | 74 | 75 | 75 | 75 | 77 | 77 | 77 | 78 | 78 | 79 | 79 | 79 | 79 |
| Cloudier (%) | 31 | 31 | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 27 | 27 | 26 | 26 | 25 | 25 | 25 | 23 | 23 | 23 | 22 | 22 | 21 | 21 | 21 | 21 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 69 | 31 |
| 2 | 69 | 31 |
| 3 | 70 | 30 |
| 4 | 70 | 30 |
| 5 | 70 | 30 |
| 6 | 70 | 30 |
| 7 | 71 | 29 |
| 8 | 71 | 29 |
| 9 | 71 | 29 |
| 10 | 71 | 29 |
| 11 | 71 | 29 |
| 12 | 71 | 29 |
| 13 | 72 | 28 |
| 14 | 72 | 28 |
| 15 | 72 | 28 |
| 16 | 73 | 27 |
| 17 | 73 | 27 |
| 18 | 74 | 26 |
| 19 | 74 | 26 |
| 20 | 75 | 25 |
| 21 | 75 | 25 |
| 22 | 75 | 25 |
| 23 | 77 | 23 |
| 24 | 77 | 23 |
| 25 | 77 | 23 |
| 26 | 78 | 22 |
| 27 | 78 | 22 |
| 28 | 79 | 21 |
| 29 | 79 | 21 |
| 30 | 79 | 21 |
| 31 | 79 | 21 |
Chance of precipitation in May
Oakley gets around 0.6 in of rain over 3 wet days in May. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 9% and peaks near 11% on the wettest days.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 8 | 8 | 7 | 7 | 6 | 6 | 6 | 6 |
| Rain chance (%) | |
|---|---|
| 1 | 11 |
| 2 | 11 |
| 3 | 11 |
| 4 | 10 |
| 5 | 10 |
| 6 | 10 |
| 7 | 10 |
| 8 | 10 |
| 9 | 10 |
| 10 | 10 |
| 11 | 10 |
| 12 | 10 |
| 13 | 10 |
| 14 | 10 |
| 15 | 10 |
| 16 | 10 |
| 17 | 10 |
| 18 | 10 |
| 19 | 10 |
| 20 | 9 |
| 21 | 9 |
| 22 | 9 |
| 23 | 9 |
| 24 | 8 |
| 25 | 8 |
| 26 | 7 |
| 27 | 7 |
| 28 | 6 |
| 29 | 6 |
| 30 | 6 |
| 31 | 6 |
Humidity in May
Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, May lands in the dry band about 93% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 95 | 95 | 95 | 95 | 95 | 95 | 96 | 96 | 96 | 96 | 96 | 96 | 96 | 96 | 95 | 95 | 95 | 95 | 94 | 94 | 93 | 93 | 92 | 92 | 91 | 90 | 89 | 88 | 88 | 87 | 88 |
| Comfortable (%) | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 10 | 10 | 11 | 11 | 12 | 12 |
| Humid (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| 1 | 95 | 5 | 0 |
| 2 | 95 | 5 | 0 |
| 3 | 95 | 5 | 0 |
| 4 | 95 | 5 | 0 |
| 5 | 95 | 5 | 0 |
| 6 | 95 | 5 | 0 |
| 7 | 96 | 4 | 0 |
| 8 | 96 | 4 | 0 |
| 9 | 96 | 4 | 0 |
| 10 | 96 | 4 | 0 |
| 11 | 96 | 4 | 0 |
| 12 | 96 | 4 | 0 |
| 13 | 96 | 4 | 0 |
| 14 | 96 | 4 | 0 |
| 15 | 95 | 5 | 0 |
| 16 | 95 | 5 | 0 |
| 17 | 95 | 5 | 0 |
| 18 | 95 | 5 | 0 |
| 19 | 94 | 6 | 0 |
| 20 | 94 | 6 | 0 |
| 21 | 93 | 7 | 0 |
| 22 | 93 | 7 | 0 |
| 23 | 92 | 8 | 0 |
| 24 | 92 | 8 | 0 |
| 25 | 91 | 9 | 0 |
| 26 | 90 | 10 | 0 |
| 27 | 89 | 10 | 1 |
| 28 | 88 | 11 | 1 |
| 29 | 88 | 11 | 1 |
| 30 | 87 | 12 | 1 |
| 31 | 88 | 12 | 0 |
Wind in May
Winds average 8 mph in May.
Across May, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Feels | calm | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 7 | calm |
| 2 | 7 | light breeze |
| 3 | 7 | light breeze |
| 4 | 8 | light breeze |
| 5 | 8 | light breeze |
| 6 | 8 | light breeze |
| 7 | 8 | light breeze |
| 8 | 8 | light breeze |
| 9 | 8 | light breeze |
| 10 | 8 | light breeze |
| 11 | 8 | light breeze |
| 12 | 8 | light breeze |
| 13 | 8 | light breeze |
| 14 | 8 | light breeze |
| 15 | 8 | light breeze |
| 16 | 8 | light breeze |
| 17 | 8 | light breeze |
| 18 | 8 | light breeze |
| 19 | 8 | light breeze |
| 20 | 8 | light breeze |
| 21 | 8 | light breeze |
| 22 | 8 | light breeze |
| 23 | 8 | light breeze |
| 24 | 8 | light breeze |
| 25 | 8 | light breeze |
| 26 | 8 | light breeze |
| 27 | 8 | light breeze |
| 28 | 8 | light breeze |
| 29 | 8 | light breeze |
| 30 | 8 | light breeze |
| 31 | 8 | light breeze |
Sunrise & sunset in May
Daylight runs from about 13 h 36 min at the start of May to 14 h 24 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 48 minutes over May. Sunrise moves from 5:17 AM to 4:52 AM, and sunset from 6:51 PM to 7:17 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 13.6 | 13.6 | 13.6 | 13.7 | 13.7 | 13.7 | 13.8 | 13.8 | 13.8 | 13.9 | 13.9 | 13.9 | 14.0 | 14.0 | 14.0 | 14.0 | 14.1 | 14.1 | 14.1 | 14.2 | 14.2 | 14.2 | 14.2 | 14.3 | 14.3 | 14.3 | 14.3 | 14.4 | 14.4 | 14.4 | 14.4 |
| Sunrise (AM) | 5:17 | 5:16 | 5:15 | 5:14 | 5:13 | 5:12 | 5:11 | 5:09 | 5:08 | 5:07 | 5:06 | 5:05 | 5:04 | 5:03 | 5:03 | 5:02 | 5:01 | 5:00 | 4:59 | 4:58 | 4:58 | 4:57 | 4:56 | 4:56 | 4:55 | 4:54 | 4:54 | 4:53 | 4:53 | 4:52 | 4:52 |
| Sunset (PM) | 6:51 | 6:52 | 6:53 | 6:54 | 6:54 | 6:55 | 6:56 | 6:57 | 6:58 | 6:59 | 7:00 | 7:01 | 7:02 | 7:03 | 7:04 | 7:05 | 7:05 | 7:06 | 7:07 | 7:08 | 7:09 | 7:10 | 7:11 | 7:11 | 7:12 | 7:13 | 7:14 | 7:14 | 7:15 | 7:16 | 7:17 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.6 | 5:17 | 6:51 |
| 2 | 13.6 | 5:16 | 6:52 |
| 3 | 13.6 | 5:15 | 6:53 |
| 4 | 13.7 | 5:14 | 6:54 |
| 5 | 13.7 | 5:13 | 6:54 |
| 6 | 13.7 | 5:12 | 6:55 |
| 7 | 13.8 | 5:11 | 6:56 |
| 8 | 13.8 | 5:09 | 6:57 |
| 9 | 13.8 | 5:08 | 6:58 |
| 10 | 13.9 | 5:07 | 6:59 |
| 11 | 13.9 | 5:06 | 7:00 |
| 12 | 13.9 | 5:05 | 7:01 |
| 13 | 14.0 | 5:04 | 7:02 |
| 14 | 14.0 | 5:03 | 7:03 |
| 15 | 14.0 | 5:03 | 7:04 |
| 16 | 14.0 | 5:02 | 7:05 |
| 17 | 14.1 | 5:01 | 7:05 |
| 18 | 14.1 | 5:00 | 7:06 |
| 19 | 14.1 | 4:59 | 7:07 |
| 20 | 14.2 | 4:58 | 7:08 |
| 21 | 14.2 | 4:58 | 7:09 |
| 22 | 14.2 | 4:57 | 7:10 |
| 23 | 14.2 | 4:56 | 7:11 |
| 24 | 14.3 | 4:56 | 7:11 |
| 25 | 14.3 | 4:55 | 7:12 |
| 26 | 14.3 | 4:54 | 7:13 |
| 27 | 14.3 | 4:54 | 7:14 |
| 28 | 14.4 | 4:53 | 7:14 |
| 29 | 14.4 | 4:53 | 7:15 |
| 30 | 14.4 | 4:52 | 7:16 |
| 31 | 14.4 | 4:52 | 7:17 |
Solar energy in May
Average shortwave solar energy reaching the ground each day in May, about 7.33 kWh/m².
For context, solar energy here swings from a low near 2.16 kWh/m² to a high of 8.13 kWh/m² in June across the year — May's 7.33 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.9 | 7.0 | 7.0 | 7.0 | 7.0 | 7.1 | 7.1 | 7.1 | 7.2 | 7.2 | 7.2 | 7.2 | 7.3 | 7.3 | 7.3 | 7.3 | 7.3 | 7.4 | 7.4 | 7.4 | 7.5 | 7.5 | 7.5 | 7.5 | 7.6 | 7.6 | 7.6 | 7.7 | 7.7 | 7.7 | 7.8 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.9 | Intense |
| 2 | 7.0 | Intense |
| 3 | 7.0 | Intense |
| 4 | 7.0 | Intense |
| 5 | 7.0 | Intense |
| 6 | 7.1 | Intense |
| 7 | 7.1 | Intense |
| 8 | 7.1 | Intense |
| 9 | 7.2 | Intense |
| 10 | 7.2 | Intense |
| 11 | 7.2 | Intense |
| 12 | 7.2 | Intense |
| 13 | 7.3 | Intense |
| 14 | 7.3 | Intense |
| 15 | 7.3 | Intense |
| 16 | 7.3 | Intense |
| 17 | 7.3 | Intense |
| 18 | 7.4 | Intense |
| 19 | 7.4 | Intense |
| 20 | 7.4 | Intense |
| 21 | 7.5 | Intense |
| 22 | 7.5 | Intense |
| 23 | 7.5 | Intense |
| 24 | 7.5 | Intense |
| 25 | 7.6 | Intense |
| 26 | 7.6 | Intense |
| 27 | 7.6 | Intense |
| 28 | 7.7 | Intense |
| 29 | 7.7 | Intense |
| 30 | 7.7 | Intense |
| 31 | 7.8 | Intense |
Is May a good time to visit Oakley?
Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
May is one of the better times to visit Oakley for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Oakley in May
From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In May, Oakley sees daytime highs around 76°F and nights near 54°F. Pack sun protection. Worth having: light clothes. About 3 days see rain.
UV index in Oakley in May
Clear-sky midday UV in May peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Oakley peaks around June 22 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 2 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 4 | 4 | 6 | 8 | 10 | 10 | 10 | 6 | 5 | 2 | 2 |
| Level | Moderate | Moderate | Moderate | High | Very high | Very high | Very high | Very high | High | High | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 4 | Moderate |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 10 | Very high |
| Jul | 10 | Very high |
| Aug | 10 | Very high |
| Sep | 6 | High |
| Oct | 5 | High |
| Nov | 2 | Moderate |
| Dec | 2 | Low |
Air quality in Oakley in May
Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.
Air quality in Oakley is worst in August — around 27 µg/m³ PM2.5 (moderate), about 3.6× the cleanest month (June, 8 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 15 | 14 | 15 | 12 | 9 | 8 | 11 | 27 | 23 | 17 | 19 | 14 |
| Level | Moderate | Moderate | Moderate | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 15 | Moderate |
| Feb | 14 | Moderate |
| Mar | 15 | Moderate |
| Apr | 12 | Good |
| May | 9 | Good |
| Jun | 8 | Good |
| Jul | 11 | Good |
| Aug | 27 | Moderate |
| Sep | 23 | Moderate |
| Oct | 17 | Moderate |
| Nov | 19 | Moderate |
| Dec | 14 | Moderate |
Where is Oakley?
Oakley sits at 38.0°N, 121.7°W, 20 ft above sea level, in United States. The nearest listed city is Brentwood, 4.3 mi away.
Topography around Oakley
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Oakley.
Within 2 miles, the terrain around Oakley has only modest variations in elevation — a maximum elevation change of 125 ft around an average of 30 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,857 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,452 ft.
The land around Oakley is covered by artificial surfaces (38%) within 2 miles, grassland (35%) and cropland (26%) within 10 miles, and grassland (35%) and trees (21%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Oakley (37.9974°, -121.7125°, elevation 20 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).