Weather in Santa Maria State Of Rio Grande Do Sul on 18 August 2026
Preliminary outlook for 18 August 2026
A preliminary estimate based on the 2019–2025 archive: daytime around +22°C and nighttime around +12°C, average precipitation 1.5 mm, wind around 3 m/s, humidity around 84%.
This is a climate-based estimate, not a precise long-range forecast. It is replaced by hourly data when the date enters the forecast window.
+16°C
Weather archive — latest year: 2025
Clear/Sunny
Weather archive — latest year: 2025
Nighttime: +12°C
Precipitation: 0 mm
Wind: 3 — 3 m/s
Humidity: 86%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 10 h |
| UV index | 5 | Cloud cover (avg.) | 36% |
| Pressure (avg.) | 764 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 8 km | Sea temperature | — |
| Feels like (avg.) | +16°C | Dew point (avg.) | +13°C |
| Heat index (avg.) | +16°C | Wind chill (avg.) | +16°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 104° → (E) |
Sunrise
07:05
Duration
11 h 08 min
Sunset
18:13
Moonrise
03:27
Moonset
13:26
Moon phase
Last Quarter
Illumination
29%
+19°C
Weather archive — for 2024 year
Clear/Sunny
Weather archive — for 2024 year
Nighttime: +15°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
Humidity: 89%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +27°C | Sun hours | 8 h |
| UV index | 4 | Cloud cover (avg.) | 55% |
| Pressure (avg.) | 760 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 5 km | Sea temperature | — |
| Feels like (avg.) | +20°C | Dew point (avg.) | +17°C |
| Heat index (avg.) | +20°C | Wind chill (avg.) | +19°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 113° → (ESE) |
Sunrise
07:05
Duration
11 h 08 min
Sunset
18:13
Moonrise
17:04
Moonset
06:23
Moon phase
Waxing Gibbous
Illumination
93%
+17°C
Weather archive — for 2023 year
Moderate or heavy rain shower
Weather archive — for 2023 year
Nighttime: +14°C
Precipitation: 6.5 mm
Wind: 3 — 4 m/s
Humidity: 94%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +20°C | Sun hours | 1 h |
| UV index | 5 | Cloud cover (avg.) | 70% |
| Pressure (avg.) | 755 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 5 km | Sea temperature | — |
| Feels like (avg.) | +19°C | Dew point (avg.) | +16°C |
| Heat index (avg.) | +19°C | Wind chill (avg.) | +18°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 129° ↙ (WSW) |
Sunrise
07:06
Duration
11 h 07 min
Sunset
18:13
Moonrise
08:27
Moonset
20:16
Moon phase
Waxing Crescent
Illumination
9%
+12°C
Weather archive — for 2022 year
Partly Cloudy
Weather archive — for 2022 year
Nighttime: +6°C
Precipitation: 0.6 mm
Wind: 4 — 5 m/s
Humidity: 77%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +15°C | Sun hours | 8 h |
| UV index | 3 | Cloud cover (avg.) | 74% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +11°C | Dew point (avg.) | +8°C |
| Heat index (avg.) | +12°C | Wind chill (avg.) | +11°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 196° ↓ (S) |
Sunrise
07:06
Duration
11 h 07 min
Sunset
18:13
Moonrise
00:09
Moonset
11:11
Moon phase
Waning Gibbous
Illumination
54%
+22°C
Weather archive — for 2021 year
Cloudy
Weather archive — for 2021 year
Nighttime: +17°C
Precipitation: 0.9 mm
Wind: 3 — 3 m/s
Humidity: 74%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 8 h |
| UV index | 5 | Cloud cover (avg.) | 54% |
| Pressure (avg.) | 760 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +23°C | Dew point (avg.) | +18°C |
| Heat index (avg.) | +23°C | Wind chill (avg.) | +22°C |
| Wind gusts (max.) | 13 m/s | Wind direction (avg.) | 73° ↗ (NE) |
Sunrise
07:05
Duration
11 h 08 min
Sunset
18:13
Moonrise
14:12
Moonset
03:52
Moon phase
Waxing Gibbous
Illumination
69%
+14°C
Weather archive — for 2020 year
Clear/Sunny
Weather archive — for 2020 year
Nighttime: +8°C
Precipitation: 0.7 mm
Wind: 2 — 2 m/s
Humidity: 86%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +21°C | Sun hours | 7 h |
| UV index | 4 | Cloud cover (avg.) | 44% |
| Pressure (avg.) | 758 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 8 km | Sea temperature | — |
| Feels like (avg.) | +14°C | Dew point (avg.) | +11°C |
| Heat index (avg.) | +14°C | Wind chill (avg.) | +14°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 129° → (ESE) |
Sunrise
07:05
Duration
11 h 08 min
Sunset
18:13
Moonrise
06:54
Moonset
17:49
Moon phase
New Moon
Illumination
0%
+15°C
Weather archive — for 2019 year
Clear/Sunny
Weather archive — for 2019 year
Nighttime: +10°C
Precipitation: 1.9 mm
Wind: 3 — 4 m/s
Humidity: 80%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +19°C | Sun hours | 11 h |
| UV index | 4 | Cloud cover (avg.) | 37% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +16°C | Dew point (avg.) | +13°C |
| Heat index (avg.) | +16°C | Wind chill (avg.) | +16°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 189° ↘ (SE) |
Sunrise
07:06
Duration
11 h 07 min
Sunset
18:13
Moonrise
21:02
Moonset
09:00
Moon phase
Waning Gibbous
Illumination
78%
Weather in Santa Maria State Of Rio Grande Do Sul on 18 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+22°C
|
+12°C
|
+16°C | 10 h | 5 | 86% | 3 — 3 m/s |
| 2024 |
+27°C
|
+15°C
|
+19°C | 8 h | 4 | 89% | 2 — 3 m/s |
| 2023 |
+20°C
|
+14°C
|
+17°C | 1 h | 5 | 94% | 3 — 4 m/s |
| 2022 |
+15°C
|
+6°C
|
+12°C | 8 h | 3 | 77% | 4 — 5 m/s |
| 2021 |
+29°C
|
+17°C
|
+22°C | 8 h | 5 | 74% | 3 — 3 m/s |
| 2020 |
+21°C
|
+8°C
|
+14°C | 7 h | 4 | 86% | 2 — 2 m/s |
| 2019 |
+19°C
|
+10°C
|
+15°C | 11 h | 4 | 80% | 3 — 4 m/s |