Costa Rica weather in April
In April, Costa Rica sees average daytime highs of 29°C and overnight lows near 20°C, with 81 mm of rain across 12.4 wet days and about 11.6 hours of daylight. It is the 6th-warmest and 7th-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 43% of the time in April, and the air most often feels muggy.
Daylight stretches from about 11 h 48 min at the start of April to 11 h 24 min by month's end. Set against the rest of the year, April is Costa Rica's 6th-clearest and 8th-windiest month. For the whole year in context, see Costa Rica's year-round climate.
- Daytime high
- 29°
- 6th warmest
- Overnight low
- 20°
- 5th coldest
- Rainfall
- 81 mm
- 12.4 wet days
- Daylight
- 11 h 36 min
- 6:45 AM – 6:20 PM
- Cloud cover
- 51%
- 6th clearest
- Wind
- 7 km/h
- 8th windiest
- Solar energy
- 5.1 kWh/m²
- Travel score
- 5.0
- out of 10
Temperature in April
Day-to-day highs hold fairly steady near 29°C through the month.
A typical April day in Costa Rica reaches about 29°C in the afternoon and slips back to 20°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 32°C. Set against its neighbours, April runs on par with March and about 2°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 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
| Avg low (°C) | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 |
| 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 | 30 | 20 |
| 14 | 30 | 20 |
| 15 | 30 | 20 |
| 16 | 30 | 20 |
| 17 | 30 | 20 |
| 18 | 29 | 20 |
| 19 | 29 | 20 |
| 20 | 29 | 20 |
| 21 | 29 | 20 |
| 22 | 29 | 19 |
| 23 | 29 | 19 |
| 24 | 29 | 19 |
| 25 | 29 | 19 |
| 26 | 29 | 19 |
| 27 | 29 | 19 |
| 28 | 29 | 19 |
| 29 | 29 | 19 |
| 30 | 29 | 19 |
How April really feels in Costa Rica
Once humidity and wind are folded in, April averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
April sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Costa Rica weather by month
How April compares with the rest of the year at a glance. April is the 6th-warmest and 7th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 29° / 21° | 256 | 26.2 | 13 | 3.3 |
| Feb | 29° / 21° | 215 | 23.6 | 12.6 | 3.3 |
| Mar | 30° / 21° | 181 | 23.8 | 12.1 | 3.6 |
| Apr | 29° / 20° | 81 | 12.4 | 11.6 | 5.0 |
| May | 28° / 18° | 39 | 5.7 | 11.1 | 7.0 |
| Jun | 28° / 17° | 18 | 2.4 | 10.9 | 7.9 |
| Jul | 28° / 16° | 11 | 1.4 | 11 | 7.6 |
| Aug | 30° / 18° | 17 | 2.5 | 11.4 | 6.0 |
| Sep | 31° / 20° | 67 | 8.7 | 11.9 | 4.5 |
| Oct | 31° / 21° | 129 | 18.5 | 12.4 | 3.7 |
| Nov | 30° / 21° | 175 | 22.2 | 12.9 | 3.5 |
| Dec | 29° / 21° | 217 | 25.6 | 13.1 | 3.4 |
Cloud cover in April
The sky is clear or mostly clear about 43% of the time in April.
Beyond those clear spells, partly cloudy skies cover about 18% of April, with mostly cloudy or overcast conditions the remaining 39%. 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 51 | 52 | 54 | 55 | 56 | 57 | 58 | 58 | 58 | 58 | 59 | 59 | 58 | 59 | 59 | 59 | 60 | 60 | 61 | 62 | 63 | 65 | 66 | 67 | 68 | 69 | 70 | 70 | 71 | 71 |
| Cloudier (%) | 49 | 48 | 46 | 45 | 44 | 43 | 42 | 42 | 42 | 42 | 41 | 41 | 42 | 41 | 41 | 41 | 40 | 40 | 39 | 38 | 37 | 35 | 34 | 33 | 32 | 31 | 30 | 30 | 29 | 29 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 51 | 49 |
| 2 | 52 | 48 |
| 3 | 54 | 46 |
| 4 | 55 | 45 |
| 5 | 56 | 44 |
| 6 | 57 | 43 |
| 7 | 58 | 42 |
| 8 | 58 | 42 |
| 9 | 58 | 42 |
| 10 | 58 | 42 |
| 11 | 59 | 41 |
| 12 | 59 | 41 |
| 13 | 58 | 42 |
| 14 | 59 | 41 |
| 15 | 59 | 41 |
| 16 | 59 | 41 |
| 17 | 60 | 40 |
| 18 | 60 | 40 |
| 19 | 61 | 39 |
| 20 | 62 | 38 |
| 21 | 63 | 37 |
| 22 | 65 | 35 |
| 23 | 66 | 34 |
| 24 | 67 | 33 |
| 25 | 68 | 32 |
| 26 | 69 | 31 |
| 27 | 70 | 30 |
| 28 | 70 | 30 |
| 29 | 71 | 29 |
| 30 | 71 | 29 |
Chance of precipitation in April
Costa Rica gets around 81 mm of rain over 12.4 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 42% and peaks near 63% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 63 | 62 | 60 | 58 | 57 | 56 | 55 | 53 | 52 | 51 | 50 | 49 | 47 | 46 | 44 | 43 | 41 | 39 | 38 | 36 | 34 | 32 | 30 | 28 | 26 | 25 | 23 | 22 | 21 | 20 |
| Rain chance (%) | |
|---|---|
| 1 | 63 |
| 2 | 62 |
| 3 | 60 |
| 4 | 58 |
| 5 | 57 |
| 6 | 56 |
| 7 | 55 |
| 8 | 53 |
| 9 | 52 |
| 10 | 51 |
| 11 | 50 |
| 12 | 49 |
| 13 | 47 |
| 14 | 46 |
| 15 | 44 |
| 16 | 43 |
| 17 | 41 |
| 18 | 39 |
| 19 | 38 |
| 20 | 36 |
| 21 | 34 |
| 22 | 32 |
| 23 | 30 |
| 24 | 28 |
| 25 | 26 |
| 26 | 25 |
| 27 | 23 |
| 28 | 22 |
| 29 | 21 |
| 30 | 20 |
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 59% of days. Sticky, muggy-or-worse air turns up on roughly 66% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 0 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 7 |
| Comfortable (%) | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 3 | 3 | 4 | 5 | 5 | 6 | 6 | 7 | 8 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 16 | 17 | 18 | 20 | 21 |
| Humid (%) | 9 | 9 | 10 | 11 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 21 | 22 | 24 | 25 | 27 | 28 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 36 | 37 | 37 | 37 |
| Muggy (%) | 73 | 73 | 72 | 72 | 73 | 73 | 71 | 71 | 69 | 69 | 69 | 67 | 66 | 64 | 62 | 61 | 60 | 58 | 57 | 54 | 52 | 51 | 49 | 46 | 44 | 42 | 40 | 38 | 36 | 34 |
| Oppressive (%) | 17 | 16 | 16 | 15 | 14 | 13 | 12 | 11 | 11 | 10 | 9 | 9 | 8 | 7 | 7 | 6 | 5 | 5 | 5 | 4 | 4 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 0 | 1 | 9 | 73 | 17 |
| 2 | 1 | 1 | 9 | 73 | 16 |
| 3 | 1 | 1 | 10 | 72 | 16 |
| 4 | 1 | 1 | 11 | 72 | 15 |
| 5 | 1 | 1 | 11 | 73 | 14 |
| 6 | 1 | 1 | 12 | 73 | 13 |
| 7 | 2 | 2 | 13 | 71 | 12 |
| 8 | 2 | 2 | 14 | 71 | 11 |
| 9 | 2 | 3 | 15 | 69 | 11 |
| 10 | 2 | 3 | 16 | 69 | 10 |
| 11 | 2 | 3 | 17 | 69 | 9 |
| 12 | 2 | 4 | 18 | 67 | 9 |
| 13 | 2 | 5 | 19 | 66 | 8 |
| 14 | 3 | 5 | 21 | 64 | 7 |
| 15 | 3 | 6 | 22 | 62 | 7 |
| 16 | 3 | 6 | 24 | 61 | 6 |
| 17 | 3 | 7 | 25 | 60 | 5 |
| 18 | 2 | 8 | 27 | 58 | 5 |
| 19 | 2 | 8 | 28 | 57 | 5 |
| 20 | 3 | 9 | 30 | 54 | 4 |
| 21 | 3 | 10 | 31 | 52 | 4 |
| 22 | 3 | 11 | 32 | 51 | 3 |
| 23 | 3 | 12 | 33 | 49 | 3 |
| 24 | 3 | 13 | 34 | 46 | 3 |
| 25 | 4 | 14 | 35 | 44 | 2 |
| 26 | 4 | 16 | 36 | 42 | 2 |
| 27 | 5 | 17 | 36 | 40 | 2 |
| 28 | 5 | 18 | 37 | 38 | 2 |
| 29 | 6 | 20 | 37 | 36 | 2 |
| 30 | 7 | 21 | 37 | 34 | 1 |
Wind in April
Winds average 7 km/h in April.
Across April, daily wind ranges from about 7 km/h on the calmest days to 8 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) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| 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 | 7 | calm |
| 2 | 7 | calm |
| 3 | 7 | calm |
| 4 | 7 | calm |
| 5 | 7 | calm |
| 6 | 7 | calm |
| 7 | 7 | calm |
| 8 | 7 | calm |
| 9 | 7 | calm |
| 10 | 7 | calm |
| 11 | 7 | calm |
| 12 | 7 | calm |
| 13 | 7 | calm |
| 14 | 7 | calm |
| 15 | 7 | calm |
| 16 | 7 | calm |
| 17 | 8 | calm |
| 18 | 8 | calm |
| 19 | 8 | calm |
| 20 | 8 | calm |
| 21 | 8 | calm |
| 22 | 8 | calm |
| 23 | 8 | calm |
| 24 | 8 | calm |
| 25 | 8 | calm |
| 26 | 8 | calm |
| 27 | 8 | calm |
| 28 | 8 | calm |
| 29 | 8 | calm |
| 30 | 8 | calm |
Sunrise & sunset in April
Daylight runs from about 11 h 48 min at the start of April to 11 h 24 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 24 minutes over April. Sunrise moves from 6:42 AM to 6:49 AM, and sunset from 6:32 PM to 6:10 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) | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 |
| Sunrise (AM) | 6:42 | 6:42 | 6:42 | 6:43 | 6:43 | 6:43 | 6:43 | 6:43 | 6:44 | 6:44 | 6:44 | 6:44 | 6:45 | 6:45 | 6:45 | 6:45 | 6:46 | 6:46 | 6:46 | 6:46 | 6:47 | 6:47 | 6:47 | 6:48 | 6:48 | 6:48 | 6:48 | 6:49 | 6:49 | 6:49 |
| Sunset (PM) | 6:32 | 6:32 | 6:31 | 6:30 | 6:29 | 6:28 | 6:27 | 6:27 | 6:26 | 6:25 | 6:24 | 6:23 | 6:22 | 6:22 | 6:21 | 6:20 | 6:19 | 6:19 | 6:18 | 6:17 | 6:16 | 6:16 | 6:15 | 6:14 | 6:14 | 6:13 | 6:12 | 6:12 | 6:11 | 6:10 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.8 | 6:42 | 6:32 |
| 2 | 11.8 | 6:42 | 6:32 |
| 3 | 11.8 | 6:42 | 6:31 |
| 4 | 11.8 | 6:43 | 6:30 |
| 5 | 11.8 | 6:43 | 6:29 |
| 6 | 11.8 | 6:43 | 6:28 |
| 7 | 11.7 | 6:43 | 6:27 |
| 8 | 11.7 | 6:43 | 6:27 |
| 9 | 11.7 | 6:44 | 6:26 |
| 10 | 11.7 | 6:44 | 6:25 |
| 11 | 11.7 | 6:44 | 6:24 |
| 12 | 11.6 | 6:44 | 6:23 |
| 13 | 11.6 | 6:45 | 6:22 |
| 14 | 11.6 | 6:45 | 6:22 |
| 15 | 11.6 | 6:45 | 6:21 |
| 16 | 11.6 | 6:45 | 6:20 |
| 17 | 11.6 | 6:46 | 6:19 |
| 18 | 11.5 | 6:46 | 6:19 |
| 19 | 11.5 | 6:46 | 6:18 |
| 20 | 11.5 | 6:46 | 6:17 |
| 21 | 11.5 | 6:47 | 6:16 |
| 22 | 11.5 | 6:47 | 6:16 |
| 23 | 11.5 | 6:47 | 6:15 |
| 24 | 11.4 | 6:48 | 6:14 |
| 25 | 11.4 | 6:48 | 6:14 |
| 26 | 11.4 | 6:48 | 6:13 |
| 27 | 11.4 | 6:48 | 6:12 |
| 28 | 11.4 | 6:49 | 6:12 |
| 29 | 11.4 | 6:49 | 6:11 |
| 30 | 11.4 | 6:49 | 6:10 |
Solar energy in April
Average shortwave solar energy reaching the ground each day in April, about 5.1 kWh/m².
For context, solar energy here swings from a low near 4.17 kWh/m² to a high of 5.99 kWh/m² in October across the year — April's 5.1 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 4.9 | 4.9 | 4.9 |
| 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 |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.2 | Bright |
| 2 | 5.2 | Bright |
| 3 | 5.2 | Bright |
| 4 | 5.2 | Bright |
| 5 | 5.2 | Bright |
| 6 | 5.2 | Bright |
| 7 | 5.2 | Bright |
| 8 | 5.2 | Bright |
| 9 | 5.2 | Bright |
| 10 | 5.2 | Bright |
| 11 | 5.1 | Bright |
| 12 | 5.1 | Bright |
| 13 | 5.1 | Bright |
| 14 | 5.1 | Bright |
| 15 | 5.1 | Bright |
| 16 | 5.1 | Bright |
| 17 | 5.1 | Bright |
| 18 | 5.1 | Bright |
| 19 | 5.1 | Bright |
| 20 | 5.0 | Bright |
| 21 | 5.0 | Bright |
| 22 | 5.0 | Bright |
| 23 | 5.0 | Bright |
| 24 | 5.0 | Bright |
| 25 | 5.0 | Bright |
| 26 | 5.0 | Bright |
| 27 | 5.0 | Bright |
| 28 | 4.9 | Bright |
| 29 | 4.9 | Bright |
| 30 | 4.9 | Bright |
Hazard calendar for Costa Rica
None of Costa Rica's seasonal hazards are active in April. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Costa Rica's monsoon runs October–March, when most of the year's rain falls.
Is April a good time to visit Costa Rica?
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 Costa Rica for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Costa Rica in April
From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In April, Costa Rica sees daytime highs around 29°C and nights near 20°C. Pack light clothes. Worth having: rain gear and sun protection. About 12 days see rain.
UV index in Costa Rica in April
Clear-sky midday UV in April 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 Costa Rica peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 7 (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) | 15 | 15 | 14 | 11 | 8 | 7 | 8 | 9 | 9 | 10 | 13 | 14 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 15 | Extreme |
| Mar | 14 | Extreme |
| Apr | 11 | Extreme |
| May | 8 | Very high |
| Jun | 7 | Very high |
| Jul | 8 | Very high |
| Aug | 9 | Very high |
| Sep | 9 | Very high |
| Oct | 10 | Extreme |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Air quality in Costa Rica 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 Costa Rica is worst in September — around 24 µg/m³ PM2.5 (moderate), about 5.2× the cleanest month (June, 5 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) | 7 | 7 | 6 | 5 | 5 | 5 | 8 | 10 | 24 | 12 | 6 | 6 |
| Level | Good | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 7 | Good |
| Feb | 7 | Good |
| Mar | 6 | Good |
| Apr | 5 | Good |
| May | 5 | Good |
| Jun | 5 | Good |
| Jul | 8 | Good |
| Aug | 10 | Good |
| Sep | 24 | Moderate |
| Oct | 12 | Moderate |
| Nov | 6 | Good |
| Dec | 6 | Good |
Where is Costa Rica?
Costa Rica sits at 18.5°S, 53.1°W, 646 m above sea level, in Brazil. The nearest listed city is Chapadão do Sul, 60 km away.
Topography around Costa Rica
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Costa Rica.
Within 3 km, the terrain around Costa Rica has only modest variations in elevation — a maximum elevation change of 160 m around an average of 655 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 307 m; within 80 km, large variations in elevation — a maximum elevation change of 616 m.
The land around Costa Rica is covered by grassland (39%) and trees (22%) within 3 km, cropland (41%), grassland (28%) and trees (27%) within 16 km, and cropland (42%), grassland (31%) and trees (23%) within 80 km.
Brazil travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / N
- 127 / 220 V · 60 Hz
- Prices
- ≈ 46% of US
- price level, 2025
- GDP per capita
- $10,713
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 89%
- of population, 2024
- Homicide rate
- 19.3
- per 100k, 2023
- Road deaths
- 16
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 482
- 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 Costa Rica (-18.5439°, -53.1292°, elevation 646 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. 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).