San Onofre weather in January
In January, San Onofre sees average daytime highs of 30°C and overnight lows near 24°C, with 19 mm of rain across 5.1 wet days and about 11.5 hours of daylight. It is the 3rd-warmest and 12th-wettest month of the year here.
Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 58% of the time in January, and the air most often feels oppressive.
Daylight stretches from about 11 h 24 min at the start of January to 11 h 36 min by month's end. Set against the rest of the year, January is San Onofre's 1st-clearest and 3rd-windiest month. For the whole year in context, see San Onofre's year-round climate.
- Daytime high
- 30°
- 3rd warmest
- Overnight low
- 24°
- 1st coldest
- Rainfall
- 19 mm
- 5.1 wet days
- Daylight
- 11 h 30 min
- 6:27 AM – 5:56 PM
- Cloud cover
- 40%
- 1st clearest
- Wind
- 10 km/h
- 3rd windiest
- Solar energy
- 5.5 kWh/m²
- Travel score
- 5.6
- out of 10
Temperature in January
Day-to-day highs hold fairly steady near 30°C through the month.
A typical January day in San Onofre reaches about 30°C in the afternoon and slips back to 24°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 32°C. Set against its neighbours, January runs on par with December and on par with February.
| 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 (°C) | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 |
| Avg low (°C) | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 30 | 24 |
| 2 | 30 | 24 |
| 3 | 30 | 24 |
| 4 | 30 | 24 |
| 5 | 30 | 24 |
| 6 | 30 | 24 |
| 7 | 30 | 24 |
| 8 | 30 | 24 |
| 9 | 30 | 24 |
| 10 | 30 | 24 |
| 11 | 30 | 24 |
| 12 | 30 | 24 |
| 13 | 30 | 24 |
| 14 | 30 | 24 |
| 15 | 30 | 24 |
| 16 | 30 | 24 |
| 17 | 30 | 24 |
| 18 | 30 | 24 |
| 19 | 30 | 24 |
| 20 | 30 | 24 |
| 21 | 30 | 24 |
| 22 | 31 | 25 |
| 23 | 31 | 25 |
| 24 | 31 | 25 |
| 25 | 31 | 25 |
| 26 | 31 | 25 |
| 27 | 31 | 25 |
| 28 | 31 | 25 |
| 29 | 31 | 25 |
| 30 | 31 | 25 |
| 31 | 31 | 25 |
How January really feels in San Onofre
Once humidity and wind are folded in, January averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
San Onofre weather by month
How January compares with the rest of the year at a glance. January is the 3rd-warmest and 12th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 30° / 24° | 19 | 5.1 | 11.5 | 5.6 |
| Feb | 31° / 25° | 20 | 5.6 | 11.7 | 5.1 |
| Mar | 31° / 25° | 43 | 12 | 11.9 | 4.5 |
| Apr | 30° / 25° | 119 | 22.3 | 12.2 | 3.4 |
| May | 30° / 25° | 220 | 28.2 | 12.4 | 2.9 |
| Jun | 30° / 25° | 210 | 26.1 | 12.6 | 2.9 |
| Jul | 30° / 25° | 189 | 25.7 | 12.5 | 3.0 |
| Aug | 30° / 25° | 207 | 27.3 | 12.3 | 2.9 |
| Sep | 29° / 25° | 220 | 28.2 | 12.1 | 2.9 |
| Oct | 29° / 25° | 251 | 29 | 11.8 | 3.0 |
| Nov | 29° / 25° | 190 | 25.1 | 11.6 | 3.4 |
| Dec | 30° / 25° | 80 | 14.3 | 11.4 | 4.7 |
Cloud cover in January
The sky is clear or mostly clear about 58% of the time in January, the clearest month of the year.
Beyond those clear spells, partly cloudy skies cover about 17% of January, with mostly cloudy or overcast conditions the remaining 25%. 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 (%) | 70 | 70 | 71 | 72 | 72 | 73 | 73 | 74 | 74 | 74 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 76 | 76 | 77 | 77 | 77 | 77 | 78 | 78 | 78 | 78 | 77 | 77 |
| Cloudier (%) | 30 | 30 | 29 | 28 | 28 | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 23 | 23 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 70 | 30 |
| 2 | 70 | 30 |
| 3 | 71 | 29 |
| 4 | 72 | 28 |
| 5 | 72 | 28 |
| 6 | 73 | 27 |
| 7 | 73 | 27 |
| 8 | 74 | 26 |
| 9 | 74 | 26 |
| 10 | 74 | 26 |
| 11 | 75 | 25 |
| 12 | 75 | 25 |
| 13 | 75 | 25 |
| 14 | 75 | 25 |
| 15 | 75 | 25 |
| 16 | 75 | 25 |
| 17 | 75 | 25 |
| 18 | 75 | 25 |
| 19 | 75 | 25 |
| 20 | 76 | 24 |
| 21 | 76 | 24 |
| 22 | 77 | 23 |
| 23 | 77 | 23 |
| 24 | 77 | 23 |
| 25 | 77 | 23 |
| 26 | 78 | 22 |
| 27 | 78 | 22 |
| 28 | 78 | 22 |
| 29 | 78 | 22 |
| 30 | 77 | 23 |
| 31 | 77 | 23 |
Chance of precipitation in January
San Onofre gets around 19 mm of rain over 5.1 wet days in January, the driest month. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 17% and peaks near 26% on the wettest days. The odds ease toward the end of the month.
| 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 (%) | 26 | 26 | 25 | 24 | 24 | 23 | 23 | 22 | 22 | 21 | 21 | 20 | 19 | 18 | 17 | 17 | 16 | 15 | 14 | 13 | 13 | 12 | 12 | 11 | 11 | 11 | 11 | 12 | 12 | 13 | 13 |
| Rain chance (%) | |
|---|---|
| 1 | 26 |
| 2 | 26 |
| 3 | 25 |
| 4 | 24 |
| 5 | 24 |
| 6 | 23 |
| 7 | 23 |
| 8 | 22 |
| 9 | 22 |
| 10 | 21 |
| 11 | 21 |
| 12 | 20 |
| 13 | 19 |
| 14 | 18 |
| 15 | 17 |
| 16 | 17 |
| 17 | 16 |
| 18 | 15 |
| 19 | 14 |
| 20 | 13 |
| 21 | 13 |
| 22 | 12 |
| 23 | 12 |
| 24 | 11 |
| 25 | 11 |
| 26 | 11 |
| 27 | 11 |
| 28 | 12 |
| 29 | 12 |
| 30 | 13 |
| 31 | 13 |
Humidity in January
Most of January feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, January lands in the oppressive band about 83% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Muggy (%) | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 9 | 10 | 10 |
| Oppressive (%) | 74 | 75 | 76 | 78 | 78 | 79 | 80 | 81 | 82 | 82 | 82 | 83 | 84 | 84 | 84 | 85 | 85 | 85 | 85 | 85 | 86 | 85 | 86 | 86 | 85 | 85 | 86 | 85 | 85 | 84 | 84 |
| Miserable (%) | 24 | 23 | 22 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 14 | 13 | 12 | 11 | 11 | 10 | 10 | 9 | 9 | 9 | 8 | 8 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 |
| Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|
| 1 | 2 | 74 | 24 |
| 2 | 2 | 75 | 23 |
| 3 | 2 | 76 | 22 |
| 4 | 2 | 78 | 20 |
| 5 | 3 | 78 | 19 |
| 6 | 3 | 79 | 18 |
| 7 | 3 | 80 | 17 |
| 8 | 3 | 81 | 16 |
| 9 | 3 | 82 | 15 |
| 10 | 4 | 82 | 14 |
| 11 | 4 | 82 | 14 |
| 12 | 4 | 83 | 13 |
| 13 | 4 | 84 | 12 |
| 14 | 5 | 84 | 11 |
| 15 | 5 | 84 | 11 |
| 16 | 5 | 85 | 10 |
| 17 | 5 | 85 | 10 |
| 18 | 6 | 85 | 9 |
| 19 | 6 | 85 | 9 |
| 20 | 6 | 85 | 9 |
| 21 | 6 | 86 | 8 |
| 22 | 7 | 85 | 8 |
| 23 | 7 | 86 | 7 |
| 24 | 7 | 86 | 7 |
| 25 | 8 | 85 | 7 |
| 26 | 8 | 85 | 7 |
| 27 | 8 | 86 | 6 |
| 28 | 9 | 85 | 6 |
| 29 | 9 | 85 | 6 |
| 30 | 10 | 84 | 6 |
| 31 | 10 | 84 | 6 |
Wind in January
Winds average 10 km/h in January.
Across January, daily wind ranges from about 9 km/h on the calmest days to 11 km/h 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 (km/h) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 9 | calm |
| 2 | 9 | calm |
| 3 | 9 | calm |
| 4 | 9 | calm |
| 5 | 9 | calm |
| 6 | 9 | calm |
| 7 | 9 | calm |
| 8 | 9 | calm |
| 9 | 10 | calm |
| 10 | 10 | calm |
| 11 | 10 | calm |
| 12 | 10 | calm |
| 13 | 10 | calm |
| 14 | 10 | calm |
| 15 | 10 | calm |
| 16 | 10 | calm |
| 17 | 10 | calm |
| 18 | 10 | calm |
| 19 | 10 | calm |
| 20 | 10 | calm |
| 21 | 10 | calm |
| 22 | 10 | calm |
| 23 | 11 | calm |
| 24 | 11 | calm |
| 25 | 11 | calm |
| 26 | 11 | calm |
| 27 | 11 | calm |
| 28 | 11 | calm |
| 29 | 11 | calm |
| 30 | 11 | calm |
| 31 | 11 | calm |
Sunrise & sunset in January
Daylight runs from about 11 h 24 min at the start of January to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 12 minutes over January. Sunrise moves from 6:22 AM to 6:28 AM, and sunset from 5:48 PM to 6:03 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) | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.6 | 11.6 | 11.6 | 11.6 |
| Sunrise (AM) | 6:22 | 6:22 | 6:23 | 6:23 | 6:24 | 6:24 | 6:24 | 6:25 | 6:25 | 6:25 | 6:25 | 6:26 | 6:26 | 6:26 | 6:27 | 6:27 | 6:27 | 6:27 | 6:27 | 6:27 | 6:28 | 6:28 | 6:28 | 6:28 | 6:28 | 6:28 | 6:28 | 6:28 | 6:28 | 6:28 | 6:28 |
| Sunset (PM) | 5:48 | 5:49 | 5:49 | 5:50 | 5:51 | 5:51 | 5:52 | 5:52 | 5:53 | 5:53 | 5:54 | 5:54 | 5:55 | 5:55 | 5:56 | 5:56 | 5:57 | 5:57 | 5:57 | 5:58 | 5:58 | 5:59 | 5:59 | 6:00 | 6:00 | 6:01 | 6:01 | 6:01 | 6:02 | 6:02 | 6:03 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.4 | 6:22 | 5:48 |
| 2 | 11.4 | 6:22 | 5:49 |
| 3 | 11.4 | 6:23 | 5:49 |
| 4 | 11.4 | 6:23 | 5:50 |
| 5 | 11.4 | 6:24 | 5:51 |
| 6 | 11.5 | 6:24 | 5:51 |
| 7 | 11.5 | 6:24 | 5:52 |
| 8 | 11.5 | 6:25 | 5:52 |
| 9 | 11.5 | 6:25 | 5:53 |
| 10 | 11.5 | 6:25 | 5:53 |
| 11 | 11.5 | 6:25 | 5:54 |
| 12 | 11.5 | 6:26 | 5:54 |
| 13 | 11.5 | 6:26 | 5:55 |
| 14 | 11.5 | 6:26 | 5:55 |
| 15 | 11.5 | 6:27 | 5:56 |
| 16 | 11.5 | 6:27 | 5:56 |
| 17 | 11.5 | 6:27 | 5:57 |
| 18 | 11.5 | 6:27 | 5:57 |
| 19 | 11.5 | 6:27 | 5:57 |
| 20 | 11.5 | 6:27 | 5:58 |
| 21 | 11.5 | 6:28 | 5:58 |
| 22 | 11.5 | 6:28 | 5:59 |
| 23 | 11.5 | 6:28 | 5:59 |
| 24 | 11.5 | 6:28 | 6:00 |
| 25 | 11.5 | 6:28 | 6:00 |
| 26 | 11.5 | 6:28 | 6:01 |
| 27 | 11.5 | 6:28 | 6:01 |
| 28 | 11.6 | 6:28 | 6:01 |
| 29 | 11.6 | 6:28 | 6:02 |
| 30 | 11.6 | 6:28 | 6:02 |
| 31 | 11.6 | 6:28 | 6:03 |
Solar energy in January
Average shortwave solar energy reaching the ground each day in January, about 5.5 kWh/m².
For context, solar energy here swings from a low near 4.48 kWh/m² to a high of 5.97 kWh/m² in March across the year — January's 5.5 kWh/m² sits near the top of that range.
| 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) | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.3 | Bright |
| 2 | 5.3 | Bright |
| 3 | 5.3 | Bright |
| 4 | 5.3 | Bright |
| 5 | 5.3 | Bright |
| 6 | 5.3 | Bright |
| 7 | 5.3 | Bright |
| 8 | 5.4 | Bright |
| 9 | 5.4 | Bright |
| 10 | 5.4 | Bright |
| 11 | 5.4 | Bright |
| 12 | 5.4 | Bright |
| 13 | 5.4 | Bright |
| 14 | 5.5 | Bright |
| 15 | 5.5 | Bright |
| 16 | 5.5 | Bright |
| 17 | 5.5 | Bright |
| 18 | 5.5 | Bright |
| 19 | 5.5 | Bright |
| 20 | 5.6 | Bright |
| 21 | 5.6 | Bright |
| 22 | 5.6 | Bright |
| 23 | 5.6 | Bright |
| 24 | 5.6 | Bright |
| 25 | 5.7 | Bright |
| 26 | 5.7 | Bright |
| 27 | 5.7 | Bright |
| 28 | 5.7 | Bright |
| 29 | 5.7 | Bright |
| 30 | 5.7 | Bright |
| 31 | 5.7 | Bright |
Is January a good time to visit San Onofre?
Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
January is a reasonable time to visit San Onofre for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for San Onofre in January
From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In January, San Onofre sees daytime highs around 30°C and nights near 24°C. Pack light clothes. Worth having: sun protection. About 5 days see rain.
Sea temperature near San Onofre in January
The nearest coast averages about 29°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 16 km away) is warmest in July at about 30°C and coldest in March near 28°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 29 | 28 | 28 | 29 | 29 | 30 | 30 | 30 | 30 | 29 | 29 | 29 |
| Comfort | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 29 | Tropical |
| Feb | 28 | Tropical |
| Mar | 28 | Tropical |
| Apr | 29 | Tropical |
| May | 29 | Tropical |
| Jun | 30 | Tropical |
| Jul | 30 | Tropical |
| Aug | 30 | Tropical |
| Sep | 30 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 29 | Tropical |
UV index in San Onofre in January
Clear-sky midday UV in January peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in San Onofre peaks around June 10 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 at about 10 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 11 | 12 | 12 | 12 | 13 | 13 | 11 | 12 | 12 | 12 | 10 | 10 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 11 | Extreme |
| Feb | 12 | Extreme |
| Mar | 12 | Extreme |
| Apr | 12 | Extreme |
| May | 13 | Extreme |
| Jun | 13 | Extreme |
| Jul | 11 | Extreme |
| Aug | 12 | Extreme |
| Sep | 12 | Extreme |
| Oct | 12 | Extreme |
| Nov | 10 | Very high |
| Dec | 10 | Very high |
Air quality in San Onofre in January
Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.
Air quality in San Onofre is worst in July — around 26 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (November, 11 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) | 14 | 18 | 26 | 25 | 25 | 23 | 26 | 20 | 14 | 12 | 11 | 14 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 14 | Moderate |
| Feb | 18 | Moderate |
| Mar | 26 | Moderate |
| Apr | 25 | Moderate |
| May | 25 | Moderate |
| Jun | 23 | Moderate |
| Jul | 26 | Moderate |
| Aug | 20 | Moderate |
| Sep | 14 | Moderate |
| Oct | 12 | Good |
| Nov | 11 | Good |
| Dec | 14 | Moderate |
Where is San Onofre?
San Onofre sits at 9.7°N, 75.5°W, 37 m above sea level, in Colombia. The nearest listed city is Santiago de Tolú, 24 km away.
Topography around San Onofre
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Onofre.
Within 3 km, the terrain around San Onofre has only modest variations in elevation — a maximum elevation change of 53 m around an average of 27 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 232 m; within 80 km, large variations in elevation — a maximum elevation change of 810 m.
The land around San Onofre is covered by grassland (79%) within 3 km, grassland (52%) and trees (33%) within 16 km, and grassland (39%), water (32%) and trees (23%) within 80 km.
Colombia travel facts
- Travel advisory
- Level 3
- Reconsider Travel
- Power plugs
- Type A / B
- 120 / 240 V · 60 Hz
- Prices
- ≈ 38% of US
- price level, 2025
- GDP per capita
- $8,562
- 2025
- Happiness
- 6.0 / 10
- World Happiness, 2025
- Safe drinking water
- 74%
- of population, 2024
- Homicide rate
- 24.9
- per 100k, 2023
- Road deaths
- 15.4
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 480
- 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 San Onofre (9.7359°, -75.5263°, elevation 37 m), 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).