San_Ramon_ weather in April
In April, San_Ramon_ sees average daytime highs of 29°C and overnight lows near 21°C, with 98 mm of rain across 20.7 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 8th-wettest month of the year here.
Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 21% of the time in April, and the air most often feels muggy.
Daylight stretches from about 12 h 06 min at the start of April to 12 h 18 min by month's end. Set against the rest of the year, April is San_Ramon_'s 5th-clearest and 5th-windiest month. For the whole year in context, see San_Ramon_'s year-round climate.
- Daytime high
- 29°
- 3rd warmest
- Overnight low
- 21°
- 9th coldest
- Rainfall
- 98 mm
- 20.7 wet days
- Daylight
- 12 h 12 min
- 5:31 AM – 5:45 PM
- Cloud cover
- 65%
- 5th clearest
- Wind
- 5 km/h
- 5th windiest
- Solar energy
- 5.86 kWh/m²
- Travel score
- 4.1
- out of 10
Temperature in April
Day-to-day highs hold fairly steady near 29°C through the month.
A typical April day in San_Ramon_ reaches about 29°C in the afternoon and slips back to 21°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 30°C. Set against its neighbours, April runs on par with March and about 1°C warmer than May.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 28 |
| Avg low (°C) | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 30 | 21 |
| 2 | 30 | 21 |
| 3 | 30 | 21 |
| 4 | 29 | 21 |
| 5 | 29 | 21 |
| 6 | 29 | 21 |
| 7 | 29 | 21 |
| 8 | 29 | 21 |
| 9 | 29 | 21 |
| 10 | 29 | 21 |
| 11 | 29 | 21 |
| 12 | 29 | 21 |
| 13 | 29 | 21 |
| 14 | 29 | 21 |
| 15 | 29 | 21 |
| 16 | 29 | 21 |
| 17 | 29 | 21 |
| 18 | 29 | 21 |
| 19 | 29 | 21 |
| 20 | 29 | 21 |
| 21 | 29 | 21 |
| 22 | 29 | 21 |
| 23 | 29 | 21 |
| 24 | 29 | 21 |
| 25 | 29 | 21 |
| 26 | 29 | 21 |
| 27 | 28 | 21 |
| 28 | 28 | 21 |
| 29 | 28 | 21 |
| 30 | 28 | 21 |
San_Ramon_ weather by month
How April compares with the rest of the year at a glance. April is the 3rd-warmest and 8th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 28° / 20° | 21 | 6.7 | 11.5 | 6.8 |
| Feb | 29° / 20° | 15 | 4.2 | 11.7 | 6.4 |
| Mar | 30° / 20° | 24 | 7.9 | 11.9 | 5.6 |
| Apr | 29° / 21° | 98 | 20.7 | 12.2 | 4.1 |
| May | 28° / 21° | 381 | 29.6 | 12.5 | 3.3 |
| Jun | 27° / 21° | 417 | 29.8 | 12.6 | 3.3 |
| Jul | 27° / 21° | 320 | 29.9 | 12.5 | 3.3 |
| Aug | 27° / 21° | 398 | 30.4 | 12.3 | 3.3 |
| Sep | 27° / 20° | 442 | 29.8 | 12.1 | 3.3 |
| Oct | 26° / 20° | 503 | 30.7 | 11.8 | 3.3 |
| Nov | 26° / 20° | 267 | 26.5 | 11.5 | 3.9 |
| Dec | 27° / 20° | 75 | 16.3 | 11.4 | 5.7 |
Cloud cover in April
The sky is clear or mostly clear about 21% of the time in April.
Beyond those clear spells, partly cloudy skies cover about 22% of April, with mostly cloudy or overcast conditions the remaining 58%. Skies tend to cloud over 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 62 | 60 | 59 | 57 | 56 | 55 | 52 | 51 | 51 | 50 | 49 | 48 | 47 | 45 | 45 | 45 | 43 | 41 | 40 | 39 | 36 | 34 | 32 | 31 | 28 | 26 | 24 | 23 | 21 | 19 |
| Cloudier (%) | 38 | 40 | 41 | 43 | 44 | 45 | 48 | 49 | 49 | 50 | 51 | 52 | 53 | 55 | 55 | 55 | 57 | 59 | 60 | 61 | 64 | 66 | 68 | 69 | 72 | 74 | 76 | 77 | 79 | 81 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 62 | 38 |
| 2 | 60 | 40 |
| 3 | 59 | 41 |
| 4 | 57 | 43 |
| 5 | 56 | 44 |
| 6 | 55 | 45 |
| 7 | 52 | 48 |
| 8 | 51 | 49 |
| 9 | 51 | 49 |
| 10 | 50 | 50 |
| 11 | 49 | 51 |
| 12 | 48 | 52 |
| 13 | 47 | 53 |
| 14 | 45 | 55 |
| 15 | 45 | 55 |
| 16 | 45 | 55 |
| 17 | 43 | 57 |
| 18 | 41 | 59 |
| 19 | 40 | 60 |
| 20 | 39 | 61 |
| 21 | 36 | 64 |
| 22 | 34 | 66 |
| 23 | 32 | 68 |
| 24 | 31 | 69 |
| 25 | 28 | 72 |
| 26 | 26 | 74 |
| 27 | 24 | 76 |
| 28 | 23 | 77 |
| 29 | 21 | 79 |
| 30 | 19 | 81 |
Chance of precipitation in April
San_Ramon_ gets around 98 mm of rain over 20.7 wet days in April. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 69% and peaks near 88% on the wettest days. The odds climb 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 45 | 46 | 48 | 50 | 52 | 54 | 56 | 57 | 59 | 60 | 62 | 64 | 65 | 67 | 69 | 71 | 72 | 74 | 75 | 77 | 78 | 79 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 |
| Rain chance (%) | |
|---|---|
| 1 | 45 |
| 2 | 46 |
| 3 | 48 |
| 4 | 50 |
| 5 | 52 |
| 6 | 54 |
| 7 | 56 |
| 8 | 57 |
| 9 | 59 |
| 10 | 60 |
| 11 | 62 |
| 12 | 64 |
| 13 | 65 |
| 14 | 67 |
| 15 | 69 |
| 16 | 71 |
| 17 | 72 |
| 18 | 74 |
| 19 | 75 |
| 20 | 77 |
| 21 | 78 |
| 22 | 79 |
| 23 | 81 |
| 24 | 82 |
| 25 | 83 |
| 26 | 84 |
| 27 | 85 |
| 28 | 86 |
| 29 | 87 |
| 30 | 88 |
Humidity in April
Most of April feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, April lands in the muggy band about 63% of days. Sticky, muggy-or-worse air turns up on roughly 69% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comfortable (%) | 8 | 8 | 8 | 7 | 7 | 6 | 6 | 5 | 5 | 5 | 4 | 4 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
| Humid (%) | 43 | 42 | 41 | 39 | 39 | 38 | 37 | 36 | 35 | 35 | 34 | 33 | 32 | 31 | 31 | 30 | 29 | 27 | 26 | 24 | 23 | 21 | 20 | 18 | 17 | 15 | 14 | 13 | 11 | 10 |
| Muggy (%) | 47 | 49 | 50 | 52 | 52 | 53 | 54 | 56 | 57 | 57 | 59 | 60 | 61 | 62 | 63 | 63 | 64 | 66 | 67 | 68 | 68 | 69 | 70 | 71 | 71 | 72 | 73 | 74 | 75 | 75 |
| Oppressive (%) | 1 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 8 | 9 | 9 | 10 | 11 | 12 | 13 | 13 | 14 | 15 |
| Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|
| 1 | 8 | 43 | 47 | 1 |
| 2 | 8 | 42 | 49 | 2 |
| 3 | 8 | 41 | 50 | 2 |
| 4 | 7 | 39 | 52 | 2 |
| 5 | 7 | 39 | 52 | 2 |
| 6 | 6 | 38 | 53 | 3 |
| 7 | 6 | 37 | 54 | 3 |
| 8 | 5 | 36 | 56 | 3 |
| 9 | 5 | 35 | 57 | 3 |
| 10 | 5 | 35 | 57 | 3 |
| 11 | 4 | 34 | 59 | 3 |
| 12 | 4 | 33 | 60 | 3 |
| 13 | 3 | 32 | 61 | 4 |
| 14 | 3 | 31 | 62 | 4 |
| 15 | 2 | 31 | 63 | 4 |
| 16 | 2 | 30 | 63 | 5 |
| 17 | 2 | 29 | 64 | 5 |
| 18 | 1 | 27 | 66 | 6 |
| 19 | 1 | 26 | 67 | 6 |
| 20 | 1 | 24 | 68 | 7 |
| 21 | 1 | 23 | 68 | 8 |
| 22 | 1 | 21 | 69 | 9 |
| 23 | 1 | 20 | 70 | 9 |
| 24 | 1 | 18 | 71 | 10 |
| 25 | 1 | 17 | 71 | 11 |
| 26 | 1 | 15 | 72 | 12 |
| 27 | 0 | 14 | 73 | 13 |
| 28 | 0 | 13 | 74 | 13 |
| 29 | 0 | 11 | 75 | 14 |
| 30 | 0 | 10 | 75 | 15 |
Wind in April
Winds average 5 km/h in April.
Across April, daily wind ranges from about 4 km/h on the calmest days to 5 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| 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 |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 5 | calm |
| 2 | 5 | calm |
| 3 | 5 | calm |
| 4 | 5 | calm |
| 5 | 5 | calm |
| 6 | 5 | calm |
| 7 | 5 | calm |
| 8 | 5 | calm |
| 9 | 5 | calm |
| 10 | 5 | calm |
| 11 | 5 | calm |
| 12 | 5 | calm |
| 13 | 5 | calm |
| 14 | 5 | calm |
| 15 | 5 | calm |
| 16 | 5 | calm |
| 17 | 5 | calm |
| 18 | 4 | calm |
| 19 | 4 | calm |
| 20 | 4 | calm |
| 21 | 4 | calm |
| 22 | 4 | calm |
| 23 | 4 | calm |
| 24 | 4 | calm |
| 25 | 4 | calm |
| 26 | 4 | calm |
| 27 | 4 | calm |
| 28 | 4 | calm |
| 29 | 4 | calm |
| 30 | 4 | calm |
Sunrise & sunset in April
Daylight runs from about 12 h 06 min at the start of April to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 12 minutes over April. Sunrise moves from 5:40 AM to 5:25 AM, and sunset from 5:45 PM to 5:46 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 |
| Sunrise (AM) | 5:40 | 5:39 | 5:39 | 5:38 | 5:38 | 5:37 | 5:36 | 5:36 | 5:35 | 5:35 | 5:34 | 5:34 | 5:33 | 5:32 | 5:32 | 5:31 | 5:31 | 5:30 | 5:30 | 5:29 | 5:29 | 5:28 | 5:28 | 5:27 | 5:27 | 5:27 | 5:26 | 5:26 | 5:25 | 5:25 |
| Sunset (PM) | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:45 | 5:46 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.1 | 5:40 | 5:45 |
| 2 | 12.1 | 5:39 | 5:45 |
| 3 | 12.1 | 5:39 | 5:45 |
| 4 | 12.1 | 5:38 | 5:45 |
| 5 | 12.1 | 5:38 | 5:45 |
| 6 | 12.1 | 5:37 | 5:45 |
| 7 | 12.1 | 5:36 | 5:45 |
| 8 | 12.1 | 5:36 | 5:45 |
| 9 | 12.2 | 5:35 | 5:45 |
| 10 | 12.2 | 5:35 | 5:45 |
| 11 | 12.2 | 5:34 | 5:45 |
| 12 | 12.2 | 5:34 | 5:45 |
| 13 | 12.2 | 5:33 | 5:45 |
| 14 | 12.2 | 5:32 | 5:45 |
| 15 | 12.2 | 5:32 | 5:45 |
| 16 | 12.2 | 5:31 | 5:45 |
| 17 | 12.2 | 5:31 | 5:45 |
| 18 | 12.2 | 5:30 | 5:45 |
| 19 | 12.2 | 5:30 | 5:45 |
| 20 | 12.3 | 5:29 | 5:45 |
| 21 | 12.3 | 5:29 | 5:45 |
| 22 | 12.3 | 5:28 | 5:45 |
| 23 | 12.3 | 5:28 | 5:45 |
| 24 | 12.3 | 5:27 | 5:45 |
| 25 | 12.3 | 5:27 | 5:45 |
| 26 | 12.3 | 5:27 | 5:45 |
| 27 | 12.3 | 5:26 | 5:45 |
| 28 | 12.3 | 5:26 | 5:45 |
| 29 | 12.3 | 5:25 | 5:45 |
| 30 | 12.3 | 5:25 | 5:46 |
Solar energy in April
Average shortwave solar energy reaching the ground each day in April, about 5.86 kWh/m².
For context, solar energy here swings from a low near 3.82 kWh/m² to a high of 6.19 kWh/m² in March across the year — April's 5.86 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.1 | 6.1 | 6.1 | 6.1 | 6.0 | 6.0 | 6.0 | 6.0 | 5.9 | 5.9 | 5.9 | 5.8 | 5.8 | 5.8 | 5.7 | 5.7 | 5.7 | 5.6 | 5.6 | 5.5 | 5.5 | 5.4 | 5.4 | 5.3 | 5.3 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.2 | Intense |
| 2 | 6.2 | Intense |
| 3 | 6.2 | Intense |
| 4 | 6.2 | Intense |
| 5 | 6.2 | Intense |
| 6 | 6.1 | Intense |
| 7 | 6.1 | Intense |
| 8 | 6.1 | Intense |
| 9 | 6.1 | Intense |
| 10 | 6.0 | Intense |
| 11 | 6.0 | Intense |
| 12 | 6.0 | Intense |
| 13 | 6.0 | Bright |
| 14 | 5.9 | Bright |
| 15 | 5.9 | Bright |
| 16 | 5.9 | Bright |
| 17 | 5.8 | Bright |
| 18 | 5.8 | Bright |
| 19 | 5.8 | Bright |
| 20 | 5.7 | Bright |
| 21 | 5.7 | Bright |
| 22 | 5.7 | Bright |
| 23 | 5.6 | Bright |
| 24 | 5.6 | Bright |
| 25 | 5.5 | Bright |
| 26 | 5.5 | Bright |
| 27 | 5.4 | Bright |
| 28 | 5.4 | Bright |
| 29 | 5.3 | Bright |
| 30 | 5.3 | Bright |
Hazard calendar for San_Ramon_
None of San_Ramon_'s seasonal hazards are active in April. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
San_Ramon_'s rainy season runs May–November, when most of the year's rain falls.
Is April a good time to visit San_Ramon_?
Our two travel scores rate April for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
April is a reasonable time to visit San_Ramon_ for sightseeing.
What to pack for San_Ramon_ in April
From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In April, San_Ramon_ sees daytime highs around 29°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.
Sea temperature near San_Ramon_ in April
The nearest coast averages about 29°C in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 29 km away) is warmest in April at about 29°C and coldest in November 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 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 |
| Comfort | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 29 | Tropical |
| Feb | 29 | Tropical |
| Mar | 29 | Tropical |
| Apr | 29 | Tropical |
| May | 29 | Tropical |
| Jun | 29 | Tropical |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 28 | Tropical |
| Nov | 28 | Warm |
| Dec | 28 | Tropical |
UV index in San_Ramon_ in April
Clear-sky midday UV in April peaks around 14 (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_Ramon_ peaks around February 22 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 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 | 14 | 14 | 14 | 12 | 13 | 12 | 12 | 12 | 12 | 11 | 10 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 11 | Extreme |
| Feb | 14 | Extreme |
| Mar | 14 | Extreme |
| Apr | 14 | Extreme |
| May | 12 | Extreme |
| Jun | 13 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 12 | Extreme |
| Oct | 12 | Extreme |
| Nov | 11 | Extreme |
| Dec | 10 | Very high |
Air quality in San_Ramon_ in April
Average fine-particle pollution (PM2.5) through the year — so you can see where April falls, not just the annual average.
Air quality in San_Ramon_ is worst in May — around 18 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (January, 9 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) | 9 | 10 | 11 | 16 | 18 | 16 | 17 | 15 | 14 | 12 | 11 | 9 |
| Level | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 10 | Good |
| Mar | 11 | Good |
| Apr | 16 | Moderate |
| May | 18 | Moderate |
| Jun | 16 | Moderate |
| Jul | 17 | Moderate |
| Aug | 15 | Moderate |
| Sep | 14 | Moderate |
| Oct | 12 | Moderate |
| Nov | 11 | Good |
| Dec | 9 | Good |
Where is San_Ramon_?
San_Ramon_ sits at 10.1°N, 84.5°W, 0 m above sea level, in Costa Rica. The nearest listed city is Esparza, 24 km away.
Topography around San_Ramon_
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San_Ramon_.
Within 3 km, the terrain around San_Ramon_ has significant variations in elevation — a maximum elevation change of 294 m around an average of 1,066 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,914 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,414 m.
The land around San_Ramon_ is covered by trees (53%), artificial surfaces (25%) and grassland (21%) within 3 km, trees (68%) and grassland (27%) within 16 km, and trees (61%) within 80 km.
Costa Rica travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 59% of US
- price level, 2025
- GDP per capita
- $19,970
- 2025
- Happiness
- 7.4 / 10
- World Happiness, 2025
- Safe drinking water
- 81%
- of population, 2024
- Homicide rate
- 17.7
- per 100k, 2023
- Road deaths
- 14.8
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 516
- 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_Ramon_ (10.088°, -84.4702°, elevation 0 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).