Weather in Angra do Heroismo on 18 August 2026
Preliminary outlook for 18 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +24°C and nighttime around +20°C, average precipitation 0.4 mm, wind around 4 m/s, humidity around 79%.
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.
+21°C
Weather archive — latest year: 2025
Patchy rain nearby
Weather archive — latest year: 2025
Nighttime: +19°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
Humidity: 74%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +23°C | Sun hours | 8 h |
| UV index | 6 | Cloud cover (avg.) | 42% |
| Pressure (avg.) | 768 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +22°C | Dew point (avg.) | +16°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 3 m/s | Wind direction (avg.) | 265° ↙ (SW) |
Sunrise
07:05
Duration
13 h 34 min
Sunset
20:39
Moonrise
01:11
Moonset
17:13
Moon phase
Last Quarter
Illumination
29%
+23°C
Weather archive — for 2024 year
Clear/Sunny
Weather archive — for 2024 year
Nighttime: +21°C
Sea temperature: +23°C
Precipitation: 0 mm
Wind: 2 — 2 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +25°C | Sun hours | 13 h |
| UV index | 6 | Cloud cover (avg.) | 4% |
| Pressure (avg.) | 770 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +23°C |
| Feels like (avg.) | +25°C | Dew point (avg.) | +19°C |
| Heat index (avg.) | +26°C | Wind chill (avg.) | +24°C |
| Wind gusts (max.) | 4 m/s | Wind direction (avg.) | 161° ↘ (SSE) |
Sunrise
07:06
Duration
13 h 33 min
Sunset
20:39
Moonrise
20:16
Moonset
05:08
Moon phase
Waxing Gibbous
Illumination
93%
+22°C
Weather archive — for 2023 year
Partly Cloudy
Weather archive — for 2023 year
Nighttime: +21°C
Precipitation: 0.6 mm
Wind: 5 — 7 m/s
Humidity: 78%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +23°C | Sun hours | 10 h |
| UV index | 5 | Cloud cover (avg.) | 38% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +25°C | Dew point (avg.) | +19°C |
| Heat index (avg.) | +25°C | Wind chill (avg.) | +23°C |
| Wind gusts (max.) | 11 m/s | Wind direction (avg.) | 308° ↖ (NNW) |
Sunrise
07:05
Duration
13 h 35 min
Sunset
20:40
Moonrise
09:11
Moonset
22:03
Moon phase
Waxing Crescent
Illumination
9%
+21°C
Weather archive — for 2022 year
Partly Cloudy
Weather archive — for 2022 year
Nighttime: +19°C
Precipitation: 0 mm
Wind: 3 — 4 m/s
Humidity: 70%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +23°C | Sun hours | 13 h |
| UV index | 6 | Cloud cover (avg.) | 47% |
| Pressure (avg.) | 771 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +22°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 70° ↗ (ENE) |
Sunrise
07:05
Duration
13 h 34 min
Sunset
20:39
Moonrise
Does not rise today
Moonset
14:11
Moon phase
Last Quarter
Illumination
54%
+22°C
Weather archive — for 2021 year
Patchy rain nearby
Weather archive — for 2021 year
Nighttime: +21°C
Precipitation: 0.2 mm
Wind: 3 — 5 m/s
Humidity: 86%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +24°C | Sun hours | 4 h |
| UV index | 6 | Cloud cover (avg.) | 70% |
| Pressure (avg.) | 770 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +24°C | Dew point (avg.) | +20°C |
| Heat index (avg.) | +25°C | Wind chill (avg.) | +23°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 229° ↙ (SW) |
Sunrise
07:05
Duration
13 h 34 min
Sunset
20:39
Moonrise
17:38
Moonset
02:02
Moon phase
Waxing Gibbous
Illumination
69%
+23°C
Weather archive — for 2020 year
Moderate rain at times
Weather archive — for 2020 year
Nighttime: +21°C
Precipitation: 1.6 mm
Wind: 8 — 11 m/s
Humidity: 88%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +24°C | Sun hours | 1 h |
| UV index | 5 | Cloud cover (avg.) | 85% |
| Pressure (avg.) | 758 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +25°C | Dew point (avg.) | +21°C |
| Heat index (avg.) | +25°C | Wind chill (avg.) | +23°C |
| Wind gusts (max.) | 16 m/s | Wind direction (avg.) | 250° ↙ (SW) |
Sunrise
07:06
Duration
13 h 33 min
Sunset
20:39
Moonrise
06:04
Moonset
20:41
Moon phase
New Moon
Illumination
0%
Weather in Angra do Heroismo on 18 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+23°C
|
+19°C
|
+21°C | 8 h | 6 | 74% | 2 — 3 m/s |
| 2024 |
+25°C
|
+21°C
|
+23°C | 13 h | 6 | 79% | 2 — 2 m/s |
| 2023 |
+23°C
|
+21°C
|
+22°C | 10 h | 5 | 78% | 5 — 7 m/s |
| 2022 |
+23°C
|
+19°C
|
+21°C | 13 h | 6 | 70% | 3 — 4 m/s |
| 2021 |
+24°C
|
+21°C
|
+22°C | 4 h | 6 | 86% | 3 — 5 m/s |
| 2020 |
+24°C
|
+21°C
|
+23°C | 1 h | 5 | 88% | 8 — 11 m/s |