Santos weather in April
In April, Santos sees average daytime highs of 25°C and overnight lows near 22°C, with 127 mm of rain across 13.4 wet days and about 11.5 hours of daylight. It is the 5th-warmest and 8th-wettest month of the year here.
Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 41% 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 06 min by month's end. Set against the rest of the year, April is Santos's 4th-clearest and 9th-windiest month. For the whole year in context, see Santos's year-round climate.
- Daytime high
- 25°
- 5th warmest
- Overnight low
- 22°
- 8th coldest
- Rainfall
- 127 mm
- 13.4 wet days
- Daylight
- 11 h 24 min
- 7:22 AM – 6:49 PM
- Cloud cover
- 52%
- 4th clearest
- Wind
- 11 km/h
- 9th windiest
- Solar energy
- 4.44 kWh/m²
- Travel score
- 6.4
- out of 10
- Air quality
- Moderate
- PM2.5 15 µg/m³ · 2016
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in April
Day-to-day highs hold fairly steady near 25°C through the month.
A typical April day in Santos reaches about 25°C in the afternoon and slips back to 22°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 27°C. Set against its neighbours, April runs about 1°C cooler than 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) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
| Avg low (°C) | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 21 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 25 | 23 |
| 2 | 25 | 23 |
| 3 | 25 | 23 |
| 4 | 25 | 23 |
| 5 | 25 | 23 |
| 6 | 25 | 23 |
| 7 | 25 | 23 |
| 8 | 25 | 23 |
| 9 | 25 | 23 |
| 10 | 25 | 23 |
| 11 | 25 | 22 |
| 12 | 25 | 22 |
| 13 | 25 | 22 |
| 14 | 25 | 22 |
| 15 | 25 | 22 |
| 16 | 25 | 22 |
| 17 | 25 | 22 |
| 18 | 25 | 22 |
| 19 | 25 | 22 |
| 20 | 25 | 22 |
| 21 | 25 | 22 |
| 22 | 25 | 22 |
| 23 | 25 | 22 |
| 24 | 24 | 22 |
| 25 | 24 | 22 |
| 26 | 24 | 21 |
| 27 | 24 | 21 |
| 28 | 24 | 21 |
| 29 | 24 | 21 |
| 30 | 24 | 21 |
Santos weather by month
How April compares with the rest of the year at a glance. April is the 5th-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 | 26° / 24° | 226 | 20.9 | 13.3 | 4.9 |
| Feb | 27° / 24° | 199 | 17.4 | 12.8 | 5.1 |
| Mar | 26° / 24° | 207 | 19.5 | 12.2 | 5.3 |
| Apr | 25° / 22° | 127 | 13.4 | 11.5 | 6.4 |
| May | 23° / 20° | 125 | 12.7 | 10.9 | 6.5 |
| Jun | 22° / 19° | 97 | 10 | 10.5 | 6.8 |
| Jul | 21° / 18° | 115 | 10 | 10.7 | 6.8 |
| Aug | 21° / 18° | 94 | 10.2 | 11.2 | 6.6 |
| Sep | 22° / 19° | 142 | 14.3 | 11.9 | 5.9 |
| Oct | 23° / 20° | 159 | 16.2 | 12.6 | 5.6 |
| Nov | 24° / 21° | 174 | 16.8 | 13.2 | 5.7 |
| Dec | 25° / 23° | 179 | 18.2 | 13.5 | 5.4 |
Cloud cover in April
The sky is clear or mostly clear about 41% 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 41%. 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 (%) | 54 | 55 | 56 | 56 | 57 | 58 | 58 | 58 | 59 | 60 | 60 | 60 | 60 | 60 | 59 | 59 | 60 | 60 | 60 | 60 | 61 | 61 | 61 | 61 | 61 | 62 | 62 | 62 | 62 | 63 |
| Cloudier (%) | 46 | 45 | 44 | 44 | 43 | 42 | 42 | 42 | 41 | 40 | 40 | 40 | 40 | 40 | 41 | 41 | 40 | 40 | 40 | 40 | 39 | 39 | 39 | 39 | 39 | 38 | 38 | 38 | 38 | 37 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 54 | 46 |
| 2 | 55 | 45 |
| 3 | 56 | 44 |
| 4 | 56 | 44 |
| 5 | 57 | 43 |
| 6 | 58 | 42 |
| 7 | 58 | 42 |
| 8 | 58 | 42 |
| 9 | 59 | 41 |
| 10 | 60 | 40 |
| 11 | 60 | 40 |
| 12 | 60 | 40 |
| 13 | 60 | 40 |
| 14 | 60 | 40 |
| 15 | 59 | 41 |
| 16 | 59 | 41 |
| 17 | 60 | 40 |
| 18 | 60 | 40 |
| 19 | 60 | 40 |
| 20 | 60 | 40 |
| 21 | 61 | 39 |
| 22 | 61 | 39 |
| 23 | 61 | 39 |
| 24 | 61 | 39 |
| 25 | 61 | 39 |
| 26 | 62 | 38 |
| 27 | 62 | 38 |
| 28 | 62 | 38 |
| 29 | 62 | 38 |
| 30 | 63 | 37 |
Chance of precipitation in April
Santos gets around 127 mm of rain over 13.4 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 45% and peaks near 57% 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 (%) | 57 | 56 | 55 | 53 | 52 | 51 | 50 | 49 | 48 | 46 | 45 | 44 | 44 | 43 | 42 | 42 | 41 | 41 | 41 | 41 | 41 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 |
| Rain chance (%) | |
|---|---|
| 1 | 57 |
| 2 | 56 |
| 3 | 55 |
| 4 | 53 |
| 5 | 52 |
| 6 | 51 |
| 7 | 50 |
| 8 | 49 |
| 9 | 48 |
| 10 | 46 |
| 11 | 45 |
| 12 | 44 |
| 13 | 44 |
| 14 | 43 |
| 15 | 42 |
| 16 | 42 |
| 17 | 41 |
| 18 | 41 |
| 19 | 41 |
| 20 | 41 |
| 21 | 41 |
| 22 | 40 |
| 23 | 40 |
| 24 | 40 |
| 25 | 40 |
| 26 | 40 |
| 27 | 40 |
| 28 | 40 |
| 29 | 40 |
| 30 | 40 |
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 40% of days. Sticky, muggy-or-worse air turns up on roughly 81% 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 |
| Comfortable (%) | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 7 |
| Humid (%) | 8 | 9 | 9 | 10 | 10 | 11 | 11 | 11 | 12 | 12 | 13 | 13 | 14 | 14 | 14 | 15 | 15 | 16 | 16 | 17 | 18 | 18 | 19 | 20 | 20 | 21 | 22 | 22 | 23 | 24 |
| Muggy (%) | 33 | 33 | 33 | 33 | 33 | 34 | 34 | 35 | 35 | 36 | 37 | 37 | 38 | 39 | 39 | 40 | 41 | 42 | 42 | 43 | 44 | 44 | 45 | 46 | 46 | 46 | 47 | 47 | 47 | 48 |
| Oppressive (%) | 53 | 52 | 52 | 52 | 51 | 50 | 49 | 48 | 47 | 46 | 45 | 44 | 43 | 42 | 41 | 40 | 39 | 38 | 36 | 35 | 33 | 32 | 30 | 29 | 28 | 26 | 25 | 24 | 22 | 20 |
| Miserable (%) | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| 1 | 0 | 1 | 8 | 33 | 53 | 5 |
| 2 | 0 | 1 | 9 | 33 | 52 | 5 |
| 3 | 0 | 1 | 9 | 33 | 52 | 5 |
| 4 | 0 | 1 | 10 | 33 | 52 | 4 |
| 5 | 0 | 2 | 10 | 33 | 51 | 4 |
| 6 | 0 | 2 | 11 | 34 | 50 | 4 |
| 7 | 0 | 2 | 11 | 34 | 49 | 4 |
| 8 | 0 | 2 | 11 | 35 | 48 | 3 |
| 9 | 0 | 2 | 12 | 35 | 47 | 3 |
| 10 | 0 | 2 | 12 | 36 | 46 | 3 |
| 11 | 0 | 3 | 13 | 37 | 45 | 3 |
| 12 | 0 | 3 | 13 | 37 | 44 | 3 |
| 13 | 0 | 3 | 14 | 38 | 43 | 3 |
| 14 | 0 | 3 | 14 | 39 | 42 | 2 |
| 15 | 0 | 3 | 14 | 39 | 41 | 2 |
| 16 | 0 | 3 | 15 | 40 | 40 | 2 |
| 17 | 0 | 3 | 15 | 41 | 39 | 2 |
| 18 | 0 | 3 | 16 | 42 | 38 | 2 |
| 19 | 0 | 3 | 16 | 42 | 36 | 2 |
| 20 | 0 | 3 | 17 | 43 | 35 | 2 |
| 21 | 0 | 4 | 18 | 44 | 33 | 1 |
| 22 | 0 | 4 | 18 | 44 | 32 | 1 |
| 23 | 0 | 4 | 19 | 45 | 30 | 1 |
| 24 | 0 | 4 | 20 | 46 | 29 | 1 |
| 25 | 0 | 5 | 20 | 46 | 28 | 1 |
| 26 | 0 | 5 | 21 | 46 | 26 | 1 |
| 27 | 0 | 6 | 22 | 47 | 25 | 1 |
| 28 | 1 | 6 | 22 | 47 | 24 | 1 |
| 29 | 1 | 7 | 23 | 47 | 22 | 0 |
| 30 | 1 | 7 | 24 | 48 | 20 | 0 |
Wind in April
Winds average 11 km/h in April.
Across April, daily wind ranges from about 11 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 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 |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 11 | calm |
| 2 | 11 | calm |
| 3 | 11 | calm |
| 4 | 11 | calm |
| 5 | 11 | calm |
| 6 | 11 | calm |
| 7 | 11 | calm |
| 8 | 11 | calm |
| 9 | 11 | calm |
| 10 | 11 | calm |
| 11 | 11 | calm |
| 12 | 11 | calm |
| 13 | 11 | calm |
| 14 | 11 | calm |
| 15 | 11 | calm |
| 16 | 11 | calm |
| 17 | 11 | calm |
| 18 | 11 | calm |
| 19 | 11 | calm |
| 20 | 11 | calm |
| 21 | 11 | calm |
| 22 | 11 | 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 |
Sunrise & sunset in April
Daylight runs from about 11 h 48 min at the start of April to 11 h 06 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 42 minutes over April. Sunrise moves from 7:16 AM to 7:28 AM, and sunset from 7:04 PM to 6:37 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 | 11.7 | 11.7 | 11.7 | 11.7 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.5 | 11.5 | 11.5 | 11.5 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.3 | 11.3 | 11.3 | 11.3 | 11.2 | 11.2 | 11.2 | 11.2 | 11.2 | 11.1 |
| Sunrise (AM) | 7:16 | 7:17 | 7:17 | 7:17 | 7:18 | 7:18 | 7:19 | 7:19 | 7:19 | 7:20 | 7:20 | 7:21 | 7:21 | 7:21 | 7:22 | 7:22 | 7:23 | 7:23 | 7:24 | 7:24 | 7:24 | 7:25 | 7:25 | 7:26 | 7:26 | 7:27 | 7:27 | 7:28 | 7:28 | 7:28 |
| Sunset (PM) | 7:04 | 7:03 | 7:02 | 7:01 | 7:00 | 6:59 | 6:58 | 6:57 | 6:56 | 6:55 | 6:54 | 6:53 | 6:52 | 6:51 | 6:50 | 6:49 | 6:48 | 6:47 | 6:46 | 6:45 | 6:44 | 6:43 | 6:43 | 6:42 | 6:41 | 6:40 | 6:39 | 6:38 | 6:38 | 6:37 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.8 | 7:16 | 7:04 |
| 2 | 11.8 | 7:17 | 7:03 |
| 3 | 11.7 | 7:17 | 7:02 |
| 4 | 11.7 | 7:17 | 7:01 |
| 5 | 11.7 | 7:18 | 7:00 |
| 6 | 11.7 | 7:18 | 6:59 |
| 7 | 11.6 | 7:19 | 6:58 |
| 8 | 11.6 | 7:19 | 6:57 |
| 9 | 11.6 | 7:19 | 6:56 |
| 10 | 11.6 | 7:20 | 6:55 |
| 11 | 11.6 | 7:20 | 6:54 |
| 12 | 11.5 | 7:21 | 6:53 |
| 13 | 11.5 | 7:21 | 6:52 |
| 14 | 11.5 | 7:21 | 6:51 |
| 15 | 11.5 | 7:22 | 6:50 |
| 16 | 11.4 | 7:22 | 6:49 |
| 17 | 11.4 | 7:23 | 6:48 |
| 18 | 11.4 | 7:23 | 6:47 |
| 19 | 11.4 | 7:24 | 6:46 |
| 20 | 11.4 | 7:24 | 6:45 |
| 21 | 11.3 | 7:24 | 6:44 |
| 22 | 11.3 | 7:25 | 6:43 |
| 23 | 11.3 | 7:25 | 6:43 |
| 24 | 11.3 | 7:26 | 6:42 |
| 25 | 11.2 | 7:26 | 6:41 |
| 26 | 11.2 | 7:27 | 6:40 |
| 27 | 11.2 | 7:27 | 6:39 |
| 28 | 11.2 | 7:28 | 6:38 |
| 29 | 11.2 | 7:28 | 6:38 |
| 30 | 11.1 | 7:28 | 6:37 |
Solar energy in April
Average shortwave solar energy reaching the ground each day in April, about 4.44 kWh/m².
For context, solar energy here swings from a low near 3.16 kWh/m² to a high of 6.1 kWh/m² in December across the year — April's 4.44 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) | 4.8 | 4.8 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.6 | 4.6 | 4.6 | 4.6 | 4.5 | 4.5 | 4.5 | 4.5 | 4.4 | 4.4 | 4.4 | 4.3 | 4.3 | 4.3 | 4.3 | 4.2 | 4.2 | 4.2 | 4.1 | 4.1 | 4.1 | 4.0 | 4.0 |
| 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 | 4.8 | Bright |
| 2 | 4.8 | Bright |
| 3 | 4.7 | Bright |
| 4 | 4.7 | Bright |
| 5 | 4.7 | Bright |
| 6 | 4.7 | Bright |
| 7 | 4.7 | Bright |
| 8 | 4.6 | Bright |
| 9 | 4.6 | Bright |
| 10 | 4.6 | Bright |
| 11 | 4.6 | Bright |
| 12 | 4.5 | Bright |
| 13 | 4.5 | Bright |
| 14 | 4.5 | Bright |
| 15 | 4.5 | Bright |
| 16 | 4.4 | Bright |
| 17 | 4.4 | Bright |
| 18 | 4.4 | Bright |
| 19 | 4.3 | Bright |
| 20 | 4.3 | Bright |
| 21 | 4.3 | Bright |
| 22 | 4.3 | Bright |
| 23 | 4.2 | Bright |
| 24 | 4.2 | Bright |
| 25 | 4.2 | Bright |
| 26 | 4.1 | Bright |
| 27 | 4.1 | Bright |
| 28 | 4.1 | Bright |
| 29 | 4.0 | Bright |
| 30 | 4.0 | Bright |
Is April a good time to visit Santos?
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 Santos for sightseeing.
What to pack for Santos in April
From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In April, Santos sees daytime highs around 25°C and nights near 22°C. Worth packing: light clothes and rain gear. About 13 days see rain.
Sea temperature near Santos in April
The nearest coast averages about 26°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 19 km away) is warmest in February at about 27°C and coldest in August near 20°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 | 27 | 27 | 26 | 24 | 22 | 21 | 20 | 21 | 22 | 23 | 25 |
| Comfort | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 26 | Warm |
| May | 24 | Refreshing |
| Jun | 22 | Refreshing |
| Jul | 21 | Refreshing |
| Aug | 20 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 22 | Refreshing |
| Nov | 23 | Refreshing |
| Dec | 25 | Warm |
UV index in Santos in April
Clear-sky midday UV in April peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Santos peaks around February 10 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (moderate).
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) | 13 | 14 | 10 | 8 | 6 | 5 | 5 | 7 | 7 | 10 | 12 | 13 |
| Level | Extreme | Extreme | Very high | Very high | High | High | Moderate | High | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 14 | Extreme |
| Mar | 10 | Very high |
| Apr | 8 | Very high |
| May | 6 | High |
| Jun | 5 | High |
| Jul | 5 | Moderate |
| Aug | 7 | High |
| Sep | 7 | Very high |
| Oct | 10 | Extreme |
| Nov | 12 | Extreme |
| Dec | 13 | Extreme |
Air quality in Santos 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 Santos is worst in July — around 23 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (February, 11 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Santos's WHO annual average of 15 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 11 | 11 | 11 | 12 | 16 | 22 | 23 | 21 | 18 | 13 | 11 | 11 |
| Level | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 11 | Good |
| Mar | 11 | Good |
| Apr | 12 | Moderate |
| May | 16 | Moderate |
| Jun | 22 | Moderate |
| Jul | 23 | Moderate |
| Aug | 21 | Moderate |
| Sep | 18 | Moderate |
| Oct | 13 | Moderate |
| Nov | 11 | Good |
| Dec | 11 | Good |
Where is Santos?
Santos sits at 24.0°S, 46.3°W, 12 m above sea level, in Brazil. The nearest listed city is São Vicente, 6.0 km away.
Topography around Santos
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Santos.
Within 3 km, the terrain around Santos has only modest variations in elevation — a maximum elevation change of 207 m around an average of 24 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 998 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,434 m.
The land around Santos is covered by artificial surfaces (54%) and water (27%) within 3 km, water (39%) and trees (33%) within 16 km, and water (47%) and trees (38%) 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 Santos (-23.9608°, -46.3336°, elevation 12 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).