San Marcos weather in May
In May, San Marcos sees average daytime highs of 32°C and overnight lows near 24°C, with 238 mm of rain across 20.1 wet days and about 12.5 hours of daylight. It is the 3rd-warmest and 4th-wettest month of the year here.
Highs ease over the month, from about 33°C in the first days to 31°C by the end. The sky is clear or mostly clear about 15% of the time in May, and the air most often feels oppressive.
Daylight stretches from about 12 h 24 min at the start of May to 12 h 36 min by month's end. Set against the rest of the year, May is San Marcos's 7th-clearest and 9th-windiest month. For the whole year in context, see San Marcos's year-round climate.
- Daytime high
- 32°
- 3rd warmest
- Overnight low
- 24°
- 12th coldest
- Rainfall
- 238 mm
- 20.1 wet days
- Daylight
- 12 h 30 min
- 5:25 AM – 5:57 PM
- Cloud cover
- 73%
- 7th clearest
- Wind
- 10 km/h
- 9th windiest
- Solar energy
- 5.85 kWh/m²
- Travel score
- 2.9
- out of 10
San Marcos is urban area and municipal seat Carazo Department, Nicaragua.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in May
Highs ease over the month, from about 33°C in the first days to 31°C by the end.
A typical May day in San Marcos reaches about 32°C in the afternoon and slips back to 24°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 34°C. Set against its neighbours, May runs about 2°C cooler than April and about 2°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) | 34 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 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 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 34 | 24 |
| 2 | 33 | 24 |
| 3 | 33 | 24 |
| 4 | 33 | 24 |
| 5 | 33 | 24 |
| 6 | 33 | 24 |
| 7 | 33 | 24 |
| 8 | 33 | 24 |
| 9 | 33 | 24 |
| 10 | 33 | 24 |
| 11 | 33 | 24 |
| 12 | 33 | 24 |
| 13 | 33 | 24 |
| 14 | 33 | 24 |
| 15 | 32 | 24 |
| 16 | 32 | 24 |
| 17 | 32 | 24 |
| 18 | 32 | 24 |
| 19 | 32 | 23 |
| 20 | 32 | 23 |
| 21 | 32 | 23 |
| 22 | 32 | 23 |
| 23 | 31 | 23 |
| 24 | 31 | 23 |
| 25 | 31 | 23 |
| 26 | 31 | 23 |
| 27 | 31 | 23 |
| 28 | 31 | 23 |
| 29 | 31 | 23 |
| 30 | 31 | 23 |
| 31 | 31 | 23 |
How May really feels in San Marcos
Once humidity and wind are folded in, May 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 May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
San Marcos weather by month
How May compares with the rest of the year at a glance. May is the 3rd-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 | 31° / 22° | 4 | 0.9 | 11.4 | 6.0 |
| Feb | 32° / 22° | 3 | 0.7 | 11.6 | 5.5 |
| Mar | 33° / 22° | 5 | 1.3 | 11.9 | 4.6 |
| Apr | 34° / 23° | 32 | 5.7 | 12.3 | 3.5 |
| May | 32° / 24° | 238 | 20.1 | 12.5 | 2.9 |
| Jun | 30° / 23° | 281 | 24.7 | 12.7 | 3.0 |
| Jul | 30° / 23° | 176 | 21.2 | 12.6 | 3.5 |
| Aug | 31° / 23° | 232 | 24.3 | 12.4 | 3.1 |
| Sep | 30° / 23° | 318 | 28 | 12.1 | 2.7 |
| Oct | 30° / 22° | 318 | 26.7 | 11.7 | 3.1 |
| Nov | 30° / 22° | 102 | 13 | 11.5 | 4.6 |
| Dec | 30° / 22° | 13 | 2.6 | 11.3 | 5.9 |
Cloud cover in May
The sky is clear or mostly clear about 15% of the time in May.
Beyond those clear spells, partly cloudy skies cover about 12% of May, with mostly cloudy or overcast conditions the remaining 73%. 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 (%) | 48 | 47 | 46 | 46 | 44 | 44 | 42 | 40 | 39 | 38 | 34 | 32 | 30 | 28 | 25 | 23 | 22 | 20 | 18 | 18 | 16 | 16 | 15 | 14 | 13 | 13 | 13 | 13 | 14 | 15 | 15 |
| Cloudier (%) | 52 | 53 | 54 | 54 | 56 | 56 | 58 | 60 | 61 | 62 | 66 | 68 | 70 | 72 | 75 | 77 | 78 | 80 | 82 | 82 | 84 | 84 | 85 | 86 | 87 | 87 | 87 | 87 | 86 | 85 | 85 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 48 | 52 |
| 2 | 47 | 53 |
| 3 | 46 | 54 |
| 4 | 46 | 54 |
| 5 | 44 | 56 |
| 6 | 44 | 56 |
| 7 | 42 | 58 |
| 8 | 40 | 60 |
| 9 | 39 | 61 |
| 10 | 38 | 62 |
| 11 | 34 | 66 |
| 12 | 32 | 68 |
| 13 | 30 | 70 |
| 14 | 28 | 72 |
| 15 | 25 | 75 |
| 16 | 23 | 77 |
| 17 | 22 | 78 |
| 18 | 20 | 80 |
| 19 | 18 | 82 |
| 20 | 18 | 82 |
| 21 | 16 | 84 |
| 22 | 16 | 84 |
| 23 | 15 | 85 |
| 24 | 14 | 86 |
| 25 | 13 | 87 |
| 26 | 13 | 87 |
| 27 | 13 | 87 |
| 28 | 13 | 87 |
| 29 | 14 | 86 |
| 30 | 15 | 85 |
| 31 | 15 | 85 |
Chance of precipitation in May
San Marcos gets around 238 mm of rain over 20.1 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 65% and peaks near 84% 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 (%) | 41 | 43 | 44 | 45 | 46 | 47 | 48 | 50 | 51 | 53 | 55 | 57 | 60 | 62 | 64 | 67 | 69 | 71 | 73 | 75 | 76 | 78 | 79 | 80 | 81 | 82 | 83 | 83 | 84 | 84 | 84 |
| Rain chance (%) | |
|---|---|
| 1 | 41 |
| 2 | 43 |
| 3 | 44 |
| 4 | 45 |
| 5 | 46 |
| 6 | 47 |
| 7 | 48 |
| 8 | 50 |
| 9 | 51 |
| 10 | 53 |
| 11 | 55 |
| 12 | 57 |
| 13 | 60 |
| 14 | 62 |
| 15 | 64 |
| 16 | 67 |
| 17 | 69 |
| 18 | 71 |
| 19 | 73 |
| 20 | 75 |
| 21 | 76 |
| 22 | 78 |
| 23 | 79 |
| 24 | 80 |
| 25 | 81 |
| 26 | 82 |
| 27 | 83 |
| 28 | 83 |
| 29 | 84 |
| 30 | 84 |
| 31 | 84 |
Humidity in May
Most of May feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, May lands in the oppressive band about 65% of days. Sticky, muggy-or-worse air turns up on roughly 97% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comfortable (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Humid (%) | 8 | 7 | 6 | 6 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
| Muggy (%) | 51 | 51 | 51 | 49 | 49 | 48 | 47 | 45 | 44 | 42 | 40 | 38 | 35 | 33 | 30 | 27 | 25 | 23 | 21 | 19 | 17 | 15 | 14 | 13 | 11 | 10 | 10 | 9 | 8 | 8 | 7 |
| Oppressive (%) | 37 | 39 | 40 | 42 | 44 | 45 | 47 | 48 | 51 | 52 | 54 | 56 | 60 | 62 | 64 | 67 | 68 | 71 | 72 | 74 | 76 | 78 | 80 | 81 | 83 | 84 | 84 | 87 | 88 | 88 | 89 |
| Miserable (%) | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 |
| Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|
| 1 | 1 | 8 | 51 | 37 | 3 |
| 2 | 1 | 7 | 51 | 39 | 2 |
| 3 | 1 | 6 | 51 | 40 | 2 |
| 4 | 1 | 6 | 49 | 42 | 2 |
| 5 | 1 | 5 | 49 | 44 | 2 |
| 6 | 1 | 5 | 48 | 45 | 2 |
| 7 | 1 | 4 | 47 | 47 | 2 |
| 8 | 1 | 4 | 45 | 48 | 2 |
| 9 | 0 | 4 | 44 | 51 | 1 |
| 10 | 0 | 4 | 42 | 52 | 2 |
| 11 | 0 | 4 | 40 | 54 | 2 |
| 12 | 0 | 4 | 38 | 56 | 2 |
| 13 | 0 | 3 | 35 | 60 | 2 |
| 14 | 0 | 3 | 33 | 62 | 2 |
| 15 | 0 | 3 | 30 | 64 | 3 |
| 16 | 0 | 3 | 27 | 67 | 3 |
| 17 | 0 | 3 | 25 | 68 | 4 |
| 18 | 0 | 2 | 23 | 71 | 4 |
| 19 | 0 | 2 | 21 | 72 | 5 |
| 20 | 0 | 2 | 19 | 74 | 5 |
| 21 | 0 | 2 | 17 | 76 | 5 |
| 22 | 0 | 2 | 15 | 78 | 5 |
| 23 | 0 | 1 | 14 | 80 | 5 |
| 24 | 0 | 1 | 13 | 81 | 5 |
| 25 | 0 | 1 | 11 | 83 | 5 |
| 26 | 0 | 1 | 10 | 84 | 5 |
| 27 | 0 | 1 | 10 | 84 | 5 |
| 28 | 0 | 0 | 9 | 87 | 4 |
| 29 | 0 | 0 | 8 | 88 | 4 |
| 30 | 0 | 0 | 8 | 88 | 4 |
| 31 | 0 | 0 | 7 | 89 | 4 |
Wind in May
Winds average 10 km/h in May.
Across May, daily wind ranges from about 8 km/h on the calmest days to 12 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) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | 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 | 12 | light breeze |
| 2 | 12 | light breeze |
| 3 | 12 | light breeze |
| 4 | 12 | light breeze |
| 5 | 12 | light breeze |
| 6 | 12 | light breeze |
| 7 | 12 | calm |
| 8 | 12 | calm |
| 9 | 12 | calm |
| 10 | 12 | calm |
| 11 | 11 | calm |
| 12 | 11 | calm |
| 13 | 11 | calm |
| 14 | 11 | calm |
| 15 | 11 | calm |
| 16 | 10 | calm |
| 17 | 10 | calm |
| 18 | 10 | calm |
| 19 | 10 | calm |
| 20 | 9 | calm |
| 21 | 9 | calm |
| 22 | 9 | calm |
| 23 | 9 | calm |
| 24 | 9 | calm |
| 25 | 9 | calm |
| 26 | 9 | calm |
| 27 | 8 | calm |
| 28 | 8 | calm |
| 29 | 8 | calm |
| 30 | 8 | calm |
| 31 | 8 | calm |
Sunrise & sunset in May
Daylight runs from about 12 h 24 min at the start of May to 12 h 36 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 12 minutes over May. Sunrise moves from 5:30 AM to 5:23 AM, and sunset from 5:55 PM to 6:01 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) | 12.4 | 12.4 | 12.4 | 12.4 | 12.5 | 12.5 | 12.5 | 12.5 | 12.5 | 12.5 | 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 | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 |
| Sunrise (AM) | 5:30 | 5:29 | 5:29 | 5:28 | 5:28 | 5:28 | 5:27 | 5:27 | 5:27 | 5:26 | 5:26 | 5:26 | 5:25 | 5:25 | 5:25 | 5:25 | 5:24 | 5:24 | 5:24 | 5:24 | 5:24 | 5:24 | 5:23 | 5:23 | 5:23 | 5:23 | 5:23 | 5:23 | 5:23 | 5:23 | 5:23 |
| Sunset (PM) | 5:55 | 5:55 | 5:55 | 5:55 | 5:55 | 5:55 | 5:56 | 5:56 | 5:56 | 5:56 | 5:56 | 5:57 | 5:57 | 5:57 | 5:57 | 5:57 | 5:58 | 5:58 | 5:58 | 5:58 | 5:59 | 5:59 | 5:59 | 6:00 | 6:00 | 6:00 | 6:00 | 6:01 | 6:01 | 6:01 | 6:01 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.4 | 5:30 | 5:55 |
| 2 | 12.4 | 5:29 | 5:55 |
| 3 | 12.4 | 5:29 | 5:55 |
| 4 | 12.4 | 5:28 | 5:55 |
| 5 | 12.5 | 5:28 | 5:55 |
| 6 | 12.5 | 5:28 | 5:55 |
| 7 | 12.5 | 5:27 | 5:56 |
| 8 | 12.5 | 5:27 | 5:56 |
| 9 | 12.5 | 5:27 | 5:56 |
| 10 | 12.5 | 5:26 | 5:56 |
| 11 | 12.5 | 5:26 | 5:56 |
| 12 | 12.5 | 5:26 | 5:57 |
| 13 | 12.5 | 5:25 | 5:57 |
| 14 | 12.5 | 5:25 | 5:57 |
| 15 | 12.5 | 5:25 | 5:57 |
| 16 | 12.5 | 5:25 | 5:57 |
| 17 | 12.6 | 5:24 | 5:58 |
| 18 | 12.6 | 5:24 | 5:58 |
| 19 | 12.6 | 5:24 | 5:58 |
| 20 | 12.6 | 5:24 | 5:58 |
| 21 | 12.6 | 5:24 | 5:59 |
| 22 | 12.6 | 5:24 | 5:59 |
| 23 | 12.6 | 5:23 | 5:59 |
| 24 | 12.6 | 5:23 | 6:00 |
| 25 | 12.6 | 5:23 | 6:00 |
| 26 | 12.6 | 5:23 | 6:00 |
| 27 | 12.6 | 5:23 | 6:00 |
| 28 | 12.6 | 5:23 | 6:01 |
| 29 | 12.6 | 5:23 | 6:01 |
| 30 | 12.6 | 5:23 | 6:01 |
| 31 | 12.6 | 5:23 | 6:01 |
Solar energy in May
Average shortwave solar energy reaching the ground each day in May, about 5.85 kWh/m².
For context, solar energy here swings from a low near 4.83 kWh/m² to a high of 6.8 kWh/m² in April across the year — May's 5.85 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) | 6.5 | 6.5 | 6.5 | 6.4 | 6.4 | 6.4 | 6.3 | 6.3 | 6.3 | 6.2 | 6.2 | 6.1 | 6.0 | 6.0 | 5.9 | 5.9 | 5.8 | 5.7 | 5.7 | 5.6 | 5.6 | 5.5 | 5.5 | 5.4 | 5.4 | 5.4 | 5.4 | 5.3 | 5.3 | 5.3 | 5.3 |
| Level | Intense | 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 | 6.5 | Intense |
| 2 | 6.5 | Intense |
| 3 | 6.5 | Intense |
| 4 | 6.4 | Intense |
| 5 | 6.4 | Intense |
| 6 | 6.4 | Intense |
| 7 | 6.3 | Intense |
| 8 | 6.3 | Intense |
| 9 | 6.3 | Intense |
| 10 | 6.2 | Intense |
| 11 | 6.2 | Intense |
| 12 | 6.1 | Intense |
| 13 | 6.0 | Intense |
| 14 | 6.0 | Bright |
| 15 | 5.9 | Bright |
| 16 | 5.9 | Bright |
| 17 | 5.8 | Bright |
| 18 | 5.7 | Bright |
| 19 | 5.7 | Bright |
| 20 | 5.6 | Bright |
| 21 | 5.6 | Bright |
| 22 | 5.5 | Bright |
| 23 | 5.5 | Bright |
| 24 | 5.4 | Bright |
| 25 | 5.4 | Bright |
| 26 | 5.4 | Bright |
| 27 | 5.4 | Bright |
| 28 | 5.3 | Bright |
| 29 | 5.3 | Bright |
| 30 | 5.3 | Bright |
| 31 | 5.3 | Bright |
Hazard calendar for San Marcos
In May, San Marcos sits inside its monsoon season. The full year is below, with each hazard's peak months called out.
San Marcos sits in the Atlantic hurricane belt; the season peaks August–October.
San Marcos's monsoon runs May–October, when most of the year's rain falls.
Is May a good time to visit San Marcos?
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 San Marcos.
What to pack for San Marcos in May
From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In May, San Marcos sees daytime highs around 32°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.
Sea temperature near San Marcos in May
The nearest coast averages about 29°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 37 km away) is warmest in September at about 29°C and coldest in February near 26°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) | 27 | 26 | 26 | 27 | 29 | 29 | 28 | 29 | 29 | 28 | 28 | 27 |
| Comfort | Warm | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 26 | Warm |
| Mar | 26 | Warm |
| Apr | 27 | Warm |
| May | 29 | Tropical |
| Jun | 29 | Tropical |
| Jul | 28 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 28 | Tropical |
| Nov | 28 | Warm |
| Dec | 27 | Warm |
UV index in San Marcos 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 San Marcos peaks around March 22 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 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) | 11 | 13 | 14 | 13 | 12 | 13 | 12 | 12 | 12 | 11 | 10 | 9 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 11 | Extreme |
| Feb | 13 | Extreme |
| Mar | 14 | Extreme |
| Apr | 13 | Extreme |
| May | 12 | Extreme |
| Jun | 13 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 12 | Extreme |
| Oct | 11 | Extreme |
| Nov | 10 | Very high |
| Dec | 9 | Very high |
Air quality in San Marcos 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 San Marcos is worst in July — around 25 µg/m³ PM2.5 (moderate), about 3.5× the cleanest month (January, 7 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 | 9 | 10 | 21 | 24 | 21 | 25 | 20 | 15 | 13 | 11 | 10 |
| Level | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 7 | Good |
| Feb | 9 | Good |
| Mar | 10 | Good |
| Apr | 21 | Moderate |
| May | 24 | Moderate |
| Jun | 21 | Moderate |
| Jul | 25 | Moderate |
| Aug | 20 | Moderate |
| Sep | 15 | Moderate |
| Oct | 13 | Moderate |
| Nov | 11 | Good |
| Dec | 10 | Good |
Where is San Marcos?
San Marcos sits at 11.9°N, 86.2°W, 554 m above sea level, in Nicaragua. The nearest listed city is Masatepe, 6.0 km away.
Topography around San Marcos
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Marcos.
Within 3 km, the terrain around San Marcos has significant variations in elevation — a maximum elevation change of 278 m around an average of 556 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 863 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,591 m.
The land around San Marcos is covered by trees (85%) within 3 km, trees (77%) within 16 km, and water (43%), trees (31%) and grassland (20%) within 80 km.
Nicaragua travel facts
- Travel advisory
- Level 3
- Reconsider Travel
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 34% of US
- price level, 2025
- GDP per capita
- $3,173
- 2025
- Happiness
- 6.3 / 10
- World Happiness, 2025
- Homicide rate
- 11.3
- per 100k, 2021
- Road deaths
- 16.9
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- Moderate
- EF EPI 512
- 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 Marcos (11.9095°, -86.2035°, elevation 554 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).