Weather in Alghero on 18 September 2026
Preliminary outlook for 18 September 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +26°C and nighttime around +20°C, average precipitation 0.2 mm, wind around 2 m/s, humidity around 67%.
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.
+23°C
Weather archive — latest year: 2025
Clear/Sunny
Weather archive — latest year: 2025
Nighttime: +19°C
Precipitation: 0 mm
Wind: 2 — 4 m/s
Humidity: 67%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +27°C | Sun hours | 12 h |
| UV index | 6 | Cloud cover (avg.) | 4% |
| Pressure (avg.) | 767 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +23°C | Dew point (avg.) | +16°C |
| Heat index (avg.) | +23°C | Wind chill (avg.) | +23°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 216° ↖ (NW) |
Sunrise
07:10
Duration
12 h 20 min
Sunset
19:30
Moonrise
03:02
Moonset
18:00
Moon phase
Waning Crescent
Illumination
12%
+19°C
Weather archive — for 2024 year
Moderate rain at times
Weather archive — for 2024 year
Nighttime: +18°C
Sea temperature: +24°C
Precipitation: 1 mm
Wind: 2 — 3 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 6 h |
| UV index | 4 | Cloud cover (avg.) | 72% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +24°C |
| Feels like (avg.) | +18°C | Dew point (avg.) | +12°C |
| Heat index (avg.) | +18°C | Wind chill (avg.) | +18°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 65° ↗ (NE) |
Sunrise
07:10
Duration
12 h 20 min
Sunset
19:30
Moonrise
19:40
Moonset
07:03
Moon phase
Full Moon
Illumination
100%
+26°C
Weather archive — for 2023 year
Partly Cloudy
Weather archive — for 2023 year
Nighttime: +23°C
Precipitation: 0 mm
Wind: 2 — 4 m/s
Humidity: 63%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 12 h |
| UV index | 7 | Cloud cover (avg.) | 23% |
| Pressure (avg.) | 762 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +28°C | Dew point (avg.) | +18°C |
| Heat index (avg.) | +28°C | Wind chill (avg.) | +26°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 203° ↑ (N) |
Sunrise
07:10
Duration
12 h 21 min
Sunset
19:31
Moonrise
10:33
Moonset
21:06
Moon phase
Waxing Crescent
Illumination
20%
+21°C
Weather archive — for 2022 year
Overcast
Weather archive — for 2022 year
Nighttime: +19°C
Precipitation: 0 mm
Wind: 4 — 5 m/s
Humidity: 58%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +24°C | Sun hours | 11 h |
| UV index | 6 | Cloud cover (avg.) | 33% |
| Pressure (avg.) | 760 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +22°C | Dew point (avg.) | +13°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 265° ↙ (WSW) |
Sunrise
07:10
Duration
12 h 21 min
Sunset
19:31
Moonrise
Does not rise today
Moonset
15:52
Moon phase
Last Quarter
Illumination
37%
+24°C
Weather archive — for 2021 year
Clear/Sunny
Weather archive — for 2021 year
Nighttime: +21°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
Humidity: 75%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +27°C | Sun hours | 12 h |
| UV index | 6 | Cloud cover (avg.) | 6% |
| 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.) | +24°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 153° ← (WNW) |
Sunrise
07:10
Duration
12 h 20 min
Sunset
19:30
Moonrise
18:36
Moonset
03:41
Moon phase
Waxing Gibbous
Illumination
82%
+24°C
Weather archive — for 2020 year
Clear/Sunny
Weather archive — for 2020 year
Nighttime: +21°C
Precipitation: 0 mm
Wind: 2 — 4 m/s
Humidity: 73%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +27°C | Sun hours | 12 h |
| UV index | 6 | Cloud cover (avg.) | 6% |
| Pressure (avg.) | 763 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +24°C | Dew point (avg.) | +19°C |
| Heat index (avg.) | +25°C | Wind chill (avg.) | +24°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 139° ↖ (NNW) |
Sunrise
07:10
Duration
12 h 20 min
Sunset
19:30
Moonrise
07:47
Moonset
20:22
Moon phase
Waxing Crescent
Illumination
2%
Weather in Alghero on 18 September in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+27°C
|
+19°C
|
+23°C | 12 h | 6 | 67% | 2 — 4 m/s |
| 2024 |
+22°C
|
+18°C
|
+19°C | 6 h | 4 | 66% | 2 — 3 m/s |
| 2023 |
+29°C
|
+23°C
|
+26°C | 12 h | 7 | 63% | 2 — 4 m/s |
| 2022 |
+24°C
|
+19°C
|
+21°C | 11 h | 6 | 58% | 4 — 5 m/s |
| 2021 |
+27°C
|
+21°C
|
+24°C | 12 h | 6 | 75% | 2 — 3 m/s |
| 2020 |
+27°C
|
+21°C
|
+24°C | 12 h | 6 | 73% | 2 — 4 m/s |