Castro weather in December
In December, Castro sees average daytime highs of 26°C and overnight lows near 17°C, with 173 mm of rain across 20.3 wet days and about 13.5 hours of daylight. It is the 3rd-warmest and 3rd-wettest month of the year here.
Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 13% of the time in December, and the air most often feels humid.
Daylight stretches from about 13 h 24 min at the start of December to 13 h 30 min by month's end. Set against the rest of the year, December is Castro's 10th-clearest and 5th-windiest month. For the whole year in context, see Castro's year-round climate.
- Daytime high
- 26°
- 3rd warmest
- Overnight low
- 17°
- 10th coldest
- Rainfall
- 173 mm
- 20.3 wet days
- Daylight
- 13 h 30 min
- 6:30 AM – 8:02 PM
- Cloud cover
- 71%
- 10th clearest
- Wind
- 11 km/h
- 5th windiest
- Solar energy
- 5.87 kWh/m²
- Travel score
- 5.1
- out of 10
Castro is human settlement in Brazil.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in December
Day-to-day highs hold fairly steady near 26°C through the month.
A typical December day in Castro reaches about 26°C in the afternoon and slips back to 17°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 29°C. Set against its neighbours, December runs about 1°C warmer than November and on par with January.
| 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) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
| Avg low (°C) | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 25 | 16 |
| 2 | 25 | 16 |
| 3 | 25 | 16 |
| 4 | 25 | 16 |
| 5 | 25 | 16 |
| 6 | 25 | 16 |
| 7 | 25 | 16 |
| 8 | 25 | 16 |
| 9 | 25 | 16 |
| 10 | 25 | 16 |
| 11 | 25 | 16 |
| 12 | 25 | 16 |
| 13 | 25 | 16 |
| 14 | 25 | 16 |
| 15 | 25 | 16 |
| 16 | 26 | 17 |
| 17 | 26 | 17 |
| 18 | 26 | 17 |
| 19 | 26 | 17 |
| 20 | 26 | 17 |
| 21 | 26 | 17 |
| 22 | 26 | 17 |
| 23 | 26 | 17 |
| 24 | 26 | 17 |
| 25 | 26 | 17 |
| 26 | 26 | 17 |
| 27 | 26 | 17 |
| 28 | 26 | 17 |
| 29 | 26 | 17 |
| 30 | 26 | 17 |
| 31 | 26 | 17 |
Castro weather by month
How December compares with the rest of the year at a glance. December is the 3rd-warmest and 3rd-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 26° / 17° | 235 | 23.8 | 13.4 | 4.5 |
| Feb | 26° / 17° | 178 | 21 | 12.9 | 4.6 |
| Mar | 25° / 17° | 132 | 18 | 12.2 | 5.5 |
| Apr | 23° / 15° | 70 | 9.6 | 11.4 | 6.9 |
| May | 20° / 12° | 89 | 8.9 | 10.8 | 6.5 |
| Jun | 19° / 11° | 93 | 8.4 | 10.5 | 6.5 |
| Jul | 19° / 10° | 79 | 7 | 10.6 | 6.8 |
| Aug | 21° / 11° | 72 | 7.3 | 11.1 | 7.2 |
| Sep | 22° / 12° | 127 | 10.4 | 11.8 | 6.6 |
| Oct | 23° / 14° | 138 | 15.1 | 12.6 | 5.9 |
| Nov | 24° / 15° | 133 | 16.1 | 13.2 | 5.8 |
| Dec | 26° / 17° | 173 | 20.3 | 13.5 | 5.1 |
Cloud cover in December
The sky is clear or mostly clear about 13% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 20% of December, with mostly cloudy or overcast conditions the remaining 66%.
| 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 (%) | 35 | 36 | 34 | 35 | 34 | 35 | 34 | 34 | 34 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 34 | 33 | 33 | 31 | 31 | 30 | 30 | 30 | 28 | 28 |
| Cloudier (%) | 65 | 64 | 66 | 65 | 66 | 65 | 66 | 66 | 66 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 66 | 67 | 67 | 69 | 69 | 70 | 70 | 70 | 72 | 72 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 35 | 65 |
| 2 | 36 | 64 |
| 3 | 34 | 66 |
| 4 | 35 | 65 |
| 5 | 34 | 66 |
| 6 | 35 | 65 |
| 7 | 34 | 66 |
| 8 | 34 | 66 |
| 9 | 34 | 66 |
| 10 | 35 | 65 |
| 11 | 35 | 65 |
| 12 | 35 | 65 |
| 13 | 35 | 65 |
| 14 | 35 | 65 |
| 15 | 35 | 65 |
| 16 | 35 | 65 |
| 17 | 35 | 65 |
| 18 | 35 | 65 |
| 19 | 35 | 65 |
| 20 | 35 | 65 |
| 21 | 35 | 65 |
| 22 | 34 | 66 |
| 23 | 33 | 67 |
| 24 | 33 | 67 |
| 25 | 31 | 69 |
| 26 | 31 | 69 |
| 27 | 30 | 70 |
| 28 | 30 | 70 |
| 29 | 30 | 70 |
| 30 | 28 | 72 |
| 31 | 28 | 72 |
Chance of precipitation in December
Castro gets around 173 mm of rain over 20.3 wet days in December. 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 73% 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 (%) | 57 | 58 | 59 | 60 | 60 | 61 | 61 | 62 | 62 | 63 | 63 | 64 | 64 | 65 | 65 | 65 | 66 | 66 | 67 | 67 | 68 | 68 | 69 | 69 | 70 | 70 | 71 | 72 | 72 | 73 | 73 |
| Rain chance (%) | |
|---|---|
| 1 | 57 |
| 2 | 58 |
| 3 | 59 |
| 4 | 60 |
| 5 | 60 |
| 6 | 61 |
| 7 | 61 |
| 8 | 62 |
| 9 | 62 |
| 10 | 63 |
| 11 | 63 |
| 12 | 64 |
| 13 | 64 |
| 14 | 65 |
| 15 | 65 |
| 16 | 65 |
| 17 | 66 |
| 18 | 66 |
| 19 | 67 |
| 20 | 67 |
| 21 | 68 |
| 22 | 68 |
| 23 | 69 |
| 24 | 69 |
| 25 | 70 |
| 26 | 70 |
| 27 | 71 |
| 28 | 72 |
| 29 | 72 |
| 30 | 73 |
| 31 | 73 |
Humidity in December
Most of December feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the humid band about 45% of days. Sticky, muggy-or-worse air turns up on roughly 28% 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 (%) | 10 | 9 | 8 | 8 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 4 | 4 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 1 |
| Comfortable (%) | 28 | 28 | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 24 | 24 | 24 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 20 | 20 | 19 | 19 | 18 | 18 | 18 | 17 | 17 |
| Humid (%) | 46 | 47 | 47 | 47 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 47 | 47 | 47 | 46 | 46 | 45 | 45 | 44 | 43 | 43 | 42 | 42 | 42 | 41 | 41 | 40 | 40 | 40 | 40 | 39 |
| Muggy (%) | 16 | 16 | 17 | 18 | 18 | 19 | 20 | 20 | 21 | 22 | 22 | 23 | 24 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 33 | 34 | 35 | 36 | 38 | 39 | 40 | 41 | 42 | 42 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 10 | 28 | 46 | 16 |
| 2 | 9 | 28 | 47 | 16 |
| 3 | 8 | 27 | 47 | 17 |
| 4 | 8 | 27 | 47 | 18 |
| 5 | 7 | 26 | 48 | 18 |
| 6 | 7 | 26 | 48 | 19 |
| 7 | 7 | 26 | 48 | 20 |
| 8 | 7 | 25 | 48 | 20 |
| 9 | 6 | 25 | 48 | 21 |
| 10 | 6 | 24 | 48 | 22 |
| 11 | 6 | 24 | 48 | 22 |
| 12 | 6 | 24 | 47 | 23 |
| 13 | 6 | 23 | 47 | 24 |
| 14 | 6 | 23 | 47 | 24 |
| 15 | 6 | 23 | 46 | 25 |
| 16 | 6 | 22 | 46 | 26 |
| 17 | 6 | 22 | 45 | 27 |
| 18 | 5 | 22 | 45 | 28 |
| 19 | 5 | 22 | 44 | 29 |
| 20 | 5 | 21 | 43 | 30 |
| 21 | 5 | 21 | 43 | 31 |
| 22 | 4 | 21 | 42 | 33 |
| 23 | 4 | 20 | 42 | 34 |
| 24 | 3 | 20 | 42 | 35 |
| 25 | 3 | 19 | 41 | 36 |
| 26 | 3 | 19 | 41 | 38 |
| 27 | 2 | 18 | 40 | 39 |
| 28 | 2 | 18 | 40 | 40 |
| 29 | 2 | 18 | 40 | 41 |
| 30 | 2 | 17 | 40 | 42 |
| 31 | 1 | 17 | 39 | 42 |
Wind in December
Winds average 11 km/h in December.
Across December, 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 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 | 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 |
| 31 | 11 | calm |
Sunrise & sunset in December
Daylight runs from about 13 h 24 min at the start of December to 13 h 30 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 6 minutes over December. Sunrise moves from 6:27 AM to 6:38 AM, and sunset from 7:53 PM to 8:09 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) | 13.4 | 13.4 | 13.4 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 |
| Sunrise (AM) | 6:27 | 6:27 | 6:27 | 6:27 | 6:27 | 6:28 | 6:28 | 6:28 | 6:28 | 6:28 | 6:29 | 6:29 | 6:29 | 6:30 | 6:30 | 6:30 | 6:31 | 6:31 | 6:31 | 6:32 | 6:32 | 6:33 | 6:33 | 6:34 | 6:34 | 6:35 | 6:35 | 6:36 | 6:36 | 6:37 | 6:38 |
| Sunset (PM) | 7:53 | 7:53 | 7:54 | 7:55 | 7:55 | 7:56 | 7:57 | 7:57 | 7:58 | 7:59 | 7:59 | 8:00 | 8:00 | 8:01 | 8:02 | 8:02 | 8:03 | 8:03 | 8:04 | 8:04 | 8:05 | 8:05 | 8:06 | 8:06 | 8:07 | 8:07 | 8:07 | 8:08 | 8:08 | 8:08 | 8:09 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.4 | 6:27 | 7:53 |
| 2 | 13.4 | 6:27 | 7:53 |
| 3 | 13.4 | 6:27 | 7:54 |
| 4 | 13.5 | 6:27 | 7:55 |
| 5 | 13.5 | 6:27 | 7:55 |
| 6 | 13.5 | 6:28 | 7:56 |
| 7 | 13.5 | 6:28 | 7:57 |
| 8 | 13.5 | 6:28 | 7:57 |
| 9 | 13.5 | 6:28 | 7:58 |
| 10 | 13.5 | 6:28 | 7:59 |
| 11 | 13.5 | 6:29 | 7:59 |
| 12 | 13.5 | 6:29 | 8:00 |
| 13 | 13.5 | 6:29 | 8:00 |
| 14 | 13.5 | 6:30 | 8:01 |
| 15 | 13.5 | 6:30 | 8:02 |
| 16 | 13.5 | 6:30 | 8:02 |
| 17 | 13.5 | 6:31 | 8:03 |
| 18 | 13.5 | 6:31 | 8:03 |
| 19 | 13.5 | 6:31 | 8:04 |
| 20 | 13.5 | 6:32 | 8:04 |
| 21 | 13.5 | 6:32 | 8:05 |
| 22 | 13.5 | 6:33 | 8:05 |
| 23 | 13.5 | 6:33 | 8:06 |
| 24 | 13.5 | 6:34 | 8:06 |
| 25 | 13.5 | 6:34 | 8:07 |
| 26 | 13.5 | 6:35 | 8:07 |
| 27 | 13.5 | 6:35 | 8:07 |
| 28 | 13.5 | 6:36 | 8:08 |
| 29 | 13.5 | 6:36 | 8:08 |
| 30 | 13.5 | 6:37 | 8:08 |
| 31 | 13.5 | 6:38 | 8:09 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 5.87 kWh/m² — the sunniest month for solar.
For context, solar energy here swings from a low near 3.05 kWh/m² to a high of 5.87 kWh/m² in December across the year — December's 5.87 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.9 | 5.9 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 |
| 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 | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.9 | Bright |
| 2 | 5.9 | Bright |
| 3 | 5.8 | Bright |
| 4 | 5.8 | Bright |
| 5 | 5.8 | Bright |
| 6 | 5.8 | Bright |
| 7 | 5.8 | Bright |
| 8 | 5.8 | Bright |
| 9 | 5.8 | Bright |
| 10 | 5.8 | Bright |
| 11 | 5.8 | Bright |
| 12 | 5.9 | Bright |
| 13 | 5.9 | Bright |
| 14 | 5.9 | Bright |
| 15 | 5.9 | Bright |
| 16 | 5.9 | Bright |
| 17 | 5.9 | Bright |
| 18 | 5.9 | Bright |
| 19 | 5.9 | Bright |
| 20 | 5.9 | Bright |
| 21 | 5.9 | Bright |
| 22 | 5.9 | Bright |
| 23 | 5.9 | Bright |
| 24 | 5.9 | Bright |
| 25 | 5.9 | Bright |
| 26 | 5.8 | Bright |
| 27 | 5.8 | Bright |
| 28 | 5.8 | Bright |
| 29 | 5.8 | Bright |
| 30 | 5.8 | Bright |
| 31 | 5.8 | Bright |
Is December a good time to visit Castro?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a reasonable time to visit Castro for sightseeing.
What to pack for Castro in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Castro sees daytime highs around 26°C and nights near 17°C. Pack rain gear. Worth having: light clothes and sun protection. About 20 days see rain.
UV index in Castro in December
Clear-sky midday UV in December 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 Castro peaks around January 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 at about 5 (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 | 12 | 9 | 7 | 6 | 5 | 7 | 5 | 11 | 14 | 14 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | High | High | High | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 15 | Extreme |
| Mar | 12 | Extreme |
| Apr | 9 | Very high |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 5 | High |
| Aug | 7 | High |
| Sep | 5 | High |
| Oct | 11 | Extreme |
| Nov | 14 | Extreme |
| Dec | 14 | Extreme |
Air quality in Castro in December
Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.
Air quality in Castro is worst in September — around 17 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (March, 6 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 | 7 | 8 | 8 | 10 | 14 | 17 | 10 | 7 | 7 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 7 | Good |
| Feb | 7 | Good |
| Mar | 6 | Good |
| Apr | 7 | Good |
| May | 8 | Good |
| Jun | 8 | Good |
| Jul | 10 | Good |
| Aug | 14 | Moderate |
| Sep | 17 | Moderate |
| Oct | 10 | Good |
| Nov | 7 | Good |
| Dec | 7 | Good |
Where is Castro?
Castro sits at 24.8°S, 50.0°W, 986 m above sea level, in Brazil. The nearest listed city is Piraí do Sul, 30 km away.
Topography around Castro
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Castro.
Within 3 km, the terrain around Castro has only modest variations in elevation — a maximum elevation change of 151 m around an average of 1,004 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 304 m; within 80 km, large variations in elevation — a maximum elevation change of 1,128 m.
The land around Castro is covered by trees (42%), artificial surfaces (28%) and grassland (20%) within 3 km, trees (42%) and cropland (42%) within 16 km, and trees (58%) and cropland (30%) 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 Castro (-24.7893°, -50.0123°, elevation 986 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).