Chalchuapa weather in May
In May, Chalchuapa sees average daytime highs of 29°C and overnight lows near 20°C, with 210 mm of rain across 23.3 wet days and about 12.6 hours of daylight. It is the 4th-warmest and 4th-wettest month of the year here.
Highs ease over the month, from about 30°C in the first days to 28°C by the end. The sky is clear or mostly clear about 9% of the time in May, and the air most often feels muggy.
Daylight stretches from about 12 h 30 min at the start of May to 12 h 48 min by month's end. Set against the rest of the year, May is Chalchuapa's 9th-clearest and 10th-windiest month. For the whole year in context, see Chalchuapa's year-round climate.
- Daytime high
- 29°
- 4th warmest
- Overnight low
- 20°
- 12th coldest
- Rainfall
- 210 mm
- 23.3 wet days
- Daylight
- 12 h 36 min
- 5:36 AM – 6:14 PM
- Cloud cover
- 76%
- 9th clearest
- Wind
- 5 km/h
- 10th windiest
- Solar energy
- 5.68 kWh/m²
- Travel score
- 3.7
- out of 10
Chalchuapa is district in Western Santa Ana, El Salvador.
- Density
- 195/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in May
Highs ease over the month, from about 30°C in the first days to 28°C by the end.
A typical May day in Chalchuapa reaches about 29°C in the afternoon and slips back to 20°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 31°C. Set against its neighbours, May runs about 1°C cooler than April and about 1°C warmer 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 (°C) | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
| Avg low (°C) | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 30 | 20 |
| 2 | 30 | 20 |
| 3 | 30 | 20 |
| 4 | 30 | 20 |
| 5 | 30 | 20 |
| 6 | 30 | 20 |
| 7 | 30 | 20 |
| 8 | 30 | 20 |
| 9 | 30 | 20 |
| 10 | 30 | 20 |
| 11 | 30 | 20 |
| 12 | 30 | 20 |
| 13 | 29 | 20 |
| 14 | 29 | 20 |
| 15 | 29 | 20 |
| 16 | 29 | 20 |
| 17 | 29 | 20 |
| 18 | 29 | 20 |
| 19 | 29 | 20 |
| 20 | 29 | 20 |
| 21 | 29 | 20 |
| 22 | 29 | 20 |
| 23 | 29 | 20 |
| 24 | 29 | 20 |
| 25 | 28 | 20 |
| 26 | 28 | 20 |
| 27 | 28 | 20 |
| 28 | 28 | 20 |
| 29 | 28 | 20 |
| 30 | 28 | 20 |
| 31 | 28 | 20 |
Chalchuapa weather by month
How May compares with the rest of the year at a glance. May is the 4th-warmest and 4th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 28° / 17° | 3 | 1.1 | 11.3 | 7.6 |
| Feb | 30° / 17° | 3 | 1.2 | 11.5 | 6.8 |
| Mar | 30° / 18° | 13 | 3.9 | 11.9 | 5.9 |
| Apr | 30° / 19° | 54 | 11.1 | 12.3 | 4.8 |
| May | 29° / 20° | 210 | 23.3 | 12.6 | 3.7 |
| Jun | 28° / 20° | 286 | 25.2 | 12.8 | 3.6 |
| Jul | 29° / 20° | 142 | 16.8 | 12.7 | 4.4 |
| Aug | 29° / 20° | 203 | 21.7 | 12.5 | 3.9 |
| Sep | 28° / 19° | 321 | 26.9 | 12.1 | 3.5 |
| Oct | 28° / 19° | 231 | 20.6 | 11.7 | 4.7 |
| Nov | 28° / 18° | 37 | 5.8 | 11.4 | 6.7 |
| Dec | 28° / 17° | 9 | 2 | 11.2 | 7.4 |
Cloud cover in May
The sky is clear or mostly clear about 9% 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 76%. 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 45 | 43 | 41 | 39 | 39 | 37 | 36 | 34 | 32 | 31 | 29 | 27 | 26 | 24 | 23 | 22 | 19 | 18 | 17 | 16 | 16 | 15 | 15 | 14 | 13 | 13 | 12 | 12 | 10 | 10 | 9 |
| Cloudier (%) | 55 | 57 | 59 | 61 | 61 | 63 | 64 | 66 | 68 | 69 | 71 | 73 | 74 | 76 | 77 | 78 | 81 | 82 | 83 | 84 | 84 | 85 | 85 | 86 | 87 | 87 | 88 | 88 | 90 | 90 | 91 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 45 | 55 |
| 2 | 43 | 57 |
| 3 | 41 | 59 |
| 4 | 39 | 61 |
| 5 | 39 | 61 |
| 6 | 37 | 63 |
| 7 | 36 | 64 |
| 8 | 34 | 66 |
| 9 | 32 | 68 |
| 10 | 31 | 69 |
| 11 | 29 | 71 |
| 12 | 27 | 73 |
| 13 | 26 | 74 |
| 14 | 24 | 76 |
| 15 | 23 | 77 |
| 16 | 22 | 78 |
| 17 | 19 | 81 |
| 18 | 18 | 82 |
| 19 | 17 | 83 |
| 20 | 16 | 84 |
| 21 | 16 | 84 |
| 22 | 15 | 85 |
| 23 | 15 | 85 |
| 24 | 14 | 86 |
| 25 | 13 | 87 |
| 26 | 13 | 87 |
| 27 | 12 | 88 |
| 28 | 12 | 88 |
| 29 | 10 | 90 |
| 30 | 10 | 90 |
| 31 | 9 | 91 |
Chance of precipitation in May
Chalchuapa gets around 210 mm of rain over 23.3 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 75% and peaks near 92% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 55 | 56 | 57 | 58 | 59 | 61 | 62 | 63 | 64 | 66 | 67 | 69 | 70 | 72 | 74 | 75 | 77 | 79 | 80 | 82 | 83 | 85 | 86 | 87 | 88 | 89 | 90 | 90 | 91 | 92 | 92 |
| Rain chance (%) | |
|---|---|
| 1 | 55 |
| 2 | 56 |
| 3 | 57 |
| 4 | 58 |
| 5 | 59 |
| 6 | 61 |
| 7 | 62 |
| 8 | 63 |
| 9 | 64 |
| 10 | 66 |
| 11 | 67 |
| 12 | 69 |
| 13 | 70 |
| 14 | 72 |
| 15 | 74 |
| 16 | 75 |
| 17 | 77 |
| 18 | 79 |
| 19 | 80 |
| 20 | 82 |
| 21 | 83 |
| 22 | 85 |
| 23 | 86 |
| 24 | 87 |
| 25 | 88 |
| 26 | 89 |
| 27 | 90 |
| 28 | 90 |
| 29 | 91 |
| 30 | 92 |
| 31 | 92 |
Humidity in May
Most of May feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, May lands in the muggy band about 74% of days. Sticky, muggy-or-worse air turns up on roughly 79% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| Comfortable (%) | 9 | 8 | 8 | 7 | 7 | 6 | 6 | 5 | 5 | 5 | 4 | 4 | 4 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Humid (%) | 26 | 26 | 25 | 24 | 24 | 23 | 23 | 22 | 22 | 22 | 21 | 21 | 20 | 20 | 19 | 19 | 18 | 17 | 16 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 |
| Muggy (%) | 61 | 62 | 63 | 65 | 65 | 68 | 68 | 70 | 70 | 69 | 70 | 70 | 70 | 71 | 71 | 72 | 72 | 73 | 75 | 74 | 75 | 76 | 77 | 78 | 80 | 83 | 84 | 85 | 86 | 87 | 88 |
| Oppressive (%) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 1 | 9 | 26 | 61 | 3 |
| 2 | 1 | 8 | 26 | 62 | 3 |
| 3 | 1 | 8 | 25 | 63 | 3 |
| 4 | 1 | 7 | 24 | 65 | 3 |
| 5 | 1 | 7 | 24 | 65 | 3 |
| 6 | 0 | 6 | 23 | 68 | 3 |
| 7 | 0 | 6 | 23 | 68 | 3 |
| 8 | 0 | 5 | 22 | 70 | 3 |
| 9 | 0 | 5 | 22 | 70 | 3 |
| 10 | 1 | 5 | 22 | 69 | 4 |
| 11 | 1 | 4 | 21 | 70 | 4 |
| 12 | 1 | 4 | 21 | 70 | 4 |
| 13 | 1 | 4 | 20 | 70 | 5 |
| 14 | 1 | 3 | 20 | 71 | 5 |
| 15 | 1 | 3 | 19 | 71 | 6 |
| 16 | 1 | 2 | 19 | 72 | 6 |
| 17 | 1 | 2 | 18 | 72 | 7 |
| 18 | 1 | 2 | 17 | 73 | 7 |
| 19 | 1 | 1 | 16 | 75 | 7 |
| 20 | 1 | 1 | 16 | 74 | 8 |
| 21 | 1 | 1 | 15 | 75 | 8 |
| 22 | 1 | 1 | 14 | 76 | 8 |
| 23 | 1 | 1 | 13 | 77 | 8 |
| 24 | 1 | 1 | 12 | 78 | 8 |
| 25 | 1 | 0 | 11 | 80 | 8 |
| 26 | 0 | 0 | 10 | 83 | 7 |
| 27 | 0 | 0 | 9 | 84 | 7 |
| 28 | 0 | 0 | 8 | 85 | 7 |
| 29 | 0 | 0 | 7 | 86 | 7 |
| 30 | 0 | 0 | 6 | 87 | 7 |
| 31 | 0 | 0 | 5 | 88 | 7 |
Wind in May
Winds average 5 km/h in May.
Across May, daily wind ranges from about 4 km/h on the calmest days to 6 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) | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 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 | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 6 | calm |
| 2 | 6 | 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 | 5 | calm |
| 19 | 5 | calm |
| 20 | 5 | calm |
| 21 | 5 | calm |
| 22 | 5 | calm |
| 23 | 5 | calm |
| 24 | 5 | calm |
| 25 | 5 | calm |
| 26 | 5 | calm |
| 27 | 4 | calm |
| 28 | 4 | calm |
| 29 | 4 | calm |
| 30 | 4 | calm |
| 31 | 4 | calm |
Sunrise & sunset in May
Daylight runs from about 12 h 30 min at the start of May to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 18 minutes over May. Sunrise moves from 5:41 AM to 5:33 AM, and sunset from 6:11 PM to 6:19 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) | 12.5 | 12.5 | 12.5 | 12.5 | 12.5 | 12.5 | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.8 | 12.8 |
| Sunrise (AM) | 5:41 | 5:41 | 5:40 | 5:40 | 5:39 | 5:39 | 5:39 | 5:38 | 5:38 | 5:37 | 5:37 | 5:37 | 5:36 | 5:36 | 5:36 | 5:36 | 5:35 | 5:35 | 5:35 | 5:35 | 5:34 | 5:34 | 5:34 | 5:34 | 5:34 | 5:34 | 5:34 | 5:34 | 5:33 | 5:33 | 5:33 |
| Sunset (PM) | 6:11 | 6:11 | 6:11 | 6:11 | 6:12 | 6:12 | 6:12 | 6:12 | 6:12 | 6:13 | 6:13 | 6:13 | 6:14 | 6:14 | 6:14 | 6:14 | 6:15 | 6:15 | 6:15 | 6:15 | 6:16 | 6:16 | 6:16 | 6:17 | 6:17 | 6:17 | 6:18 | 6:18 | 6:18 | 6:19 | 6:19 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.5 | 5:41 | 6:11 |
| 2 | 12.5 | 5:41 | 6:11 |
| 3 | 12.5 | 5:40 | 6:11 |
| 4 | 12.5 | 5:40 | 6:11 |
| 5 | 12.5 | 5:39 | 6:12 |
| 6 | 12.5 | 5:39 | 6:12 |
| 7 | 12.6 | 5:39 | 6:12 |
| 8 | 12.6 | 5:38 | 6:12 |
| 9 | 12.6 | 5:38 | 6:12 |
| 10 | 12.6 | 5:37 | 6:13 |
| 11 | 12.6 | 5:37 | 6:13 |
| 12 | 12.6 | 5:37 | 6:13 |
| 13 | 12.6 | 5:36 | 6:14 |
| 14 | 12.6 | 5:36 | 6:14 |
| 15 | 12.6 | 5:36 | 6:14 |
| 16 | 12.6 | 5:36 | 6:14 |
| 17 | 12.7 | 5:35 | 6:15 |
| 18 | 12.7 | 5:35 | 6:15 |
| 19 | 12.7 | 5:35 | 6:15 |
| 20 | 12.7 | 5:35 | 6:15 |
| 21 | 12.7 | 5:34 | 6:16 |
| 22 | 12.7 | 5:34 | 6:16 |
| 23 | 12.7 | 5:34 | 6:16 |
| 24 | 12.7 | 5:34 | 6:17 |
| 25 | 12.7 | 5:34 | 6:17 |
| 26 | 12.7 | 5:34 | 6:17 |
| 27 | 12.7 | 5:34 | 6:18 |
| 28 | 12.7 | 5:34 | 6:18 |
| 29 | 12.7 | 5:33 | 6:18 |
| 30 | 12.8 | 5:33 | 6:19 |
| 31 | 12.8 | 5:33 | 6:19 |
Solar energy in May
Average shortwave solar energy reaching the ground each day in May, about 5.68 kWh/m².
For context, solar energy here swings from a low near 4.83 kWh/m² to a high of 6.42 kWh/m² in March across the year — May's 5.68 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) | 6.2 | 6.2 | 6.1 | 6.1 | 6.1 | 6.1 | 6.0 | 6.0 | 6.0 | 5.9 | 5.9 | 5.9 | 5.8 | 5.8 | 5.8 | 5.7 | 5.7 | 5.6 | 5.6 | 5.5 | 5.5 | 5.5 | 5.4 | 5.4 | 5.4 | 5.3 | 5.3 | 5.3 | 5.3 | 5.2 | 5.2 |
| Level | 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 | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.2 | Intense |
| 2 | 6.2 | Intense |
| 3 | 6.1 | Intense |
| 4 | 6.1 | Intense |
| 5 | 6.1 | Intense |
| 6 | 6.1 | Intense |
| 7 | 6.0 | Intense |
| 8 | 6.0 | Intense |
| 9 | 6.0 | Bright |
| 10 | 5.9 | Bright |
| 11 | 5.9 | Bright |
| 12 | 5.9 | Bright |
| 13 | 5.8 | Bright |
| 14 | 5.8 | Bright |
| 15 | 5.8 | Bright |
| 16 | 5.7 | Bright |
| 17 | 5.7 | Bright |
| 18 | 5.6 | Bright |
| 19 | 5.6 | Bright |
| 20 | 5.5 | Bright |
| 21 | 5.5 | Bright |
| 22 | 5.5 | Bright |
| 23 | 5.4 | Bright |
| 24 | 5.4 | Bright |
| 25 | 5.4 | Bright |
| 26 | 5.3 | Bright |
| 27 | 5.3 | Bright |
| 28 | 5.3 | Bright |
| 29 | 5.3 | Bright |
| 30 | 5.2 | Bright |
| 31 | 5.2 | Bright |
Hazard calendar for Chalchuapa
In May, Chalchuapa sits inside its monsoon season. The full year is below, with each hazard's peak months called out.
Chalchuapa sits in the Atlantic hurricane belt; the season peaks August–October.
Chalchuapa's monsoon runs August–October, when most of the year's rain falls.
Is May a good time to visit Chalchuapa?
Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
May is a weaker month for outdoor sightseeing in Chalchuapa.
What to pack for Chalchuapa in May
From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In May, Chalchuapa sees daytime highs around 29°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 23 days see rain.
Sea temperature near Chalchuapa in May
The nearest coast averages about 30°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 45 km away) is warmest in August at about 30°C and coldest in January 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) | 28 | 28 | 29 | 30 | 30 | 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 | 28 | Tropical |
| Feb | 28 | Tropical |
| Mar | 29 | Tropical |
| Apr | 30 | Tropical |
| May | 30 | 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 Chalchuapa in May
Clear-sky midday UV in May peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Chalchuapa peaks around April 13 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 at about 9 (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) | 10 | 13 | 13 | 14 | 12 | 13 | 13 | 12 | 12 | 11 | 9 | 9 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 10 | Very high |
| Feb | 13 | Extreme |
| Mar | 13 | Extreme |
| Apr | 14 | Extreme |
| May | 12 | Extreme |
| Jun | 13 | Extreme |
| Jul | 13 | Extreme |
| Aug | 12 | Extreme |
| Sep | 12 | Extreme |
| Oct | 11 | Extreme |
| Nov | 9 | Very high |
| Dec | 9 | Very high |
Air quality in Chalchuapa 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 Chalchuapa is worst in April — around 34 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (January, 16 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) | 16 | 17 | 21 | 34 | 32 | 23 | 23 | 21 | 21 | 21 | 20 | 17 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 16 | Moderate |
| Feb | 17 | Moderate |
| Mar | 21 | Moderate |
| Apr | 34 | Moderate |
| May | 32 | Moderate |
| Jun | 23 | Moderate |
| Jul | 23 | Moderate |
| Aug | 21 | Moderate |
| Sep | 21 | Moderate |
| Oct | 21 | Moderate |
| Nov | 20 | Moderate |
| Dec | 17 | Moderate |
Where is Chalchuapa?
Chalchuapa sits at 14.0°N, 89.7°W, 710 m above sea level, in El Salvador. The nearest listed city is Santa Ana, 13 km away.
Topography around Chalchuapa
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Chalchuapa.
Within 3 km, the terrain around Chalchuapa has significant variations in elevation — a maximum elevation change of 256 m around an average of 721 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,953 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,703 m.
The land around Chalchuapa is covered by trees (44%) and grassland (20%) within 3 km, trees (65%) within 16 km, and trees (48%) and grassland (23%) within 80 km.
El Salvador travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B
- 115 V · 60 Hz
- Prices
- ≈ 41% of US
- price level, 2025
- GDP per capita
- $5,767
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Homicide rate
- 7.9
- per 100k, 2022
- Road deaths
- 20.9
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Moderate
- EF EPI 523
- 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 Chalchuapa (13.9867°, -89.6811°, elevation 710 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).