Angra do Heroísmo weather in September
In September, Angra do Heroísmo sees average daytime highs of 22°C and overnight lows near 21°C, with 45 mm of rain across 8.3 wet days and about 12.3 hours of daylight. It is the 2nd-warmest and 9th-wettest month of the year here.
Day-to-day highs hold fairly steady near 22°C through the month. The sky is clear or mostly clear about 35% of the time in September, and the air most often feels muggy.
Daylight stretches from about 12 h 54 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Angra do Heroísmo's 3rd-clearest and 9th-windiest month. For the whole year in context, see Angra do Heroísmo's year-round climate.
- Daytime high
- 22°
- 2nd warmest
- Overnight low
- 21°
- 11th coldest
- Rainfall
- 45 mm
- 8.3 wet days
- Daylight
- 12 h 12 min
- 6:36 AM – 6:51 PM
- Cloud cover
- 54%
- 3rd clearest
- Wind
- 22 km/h
- 9th windiest
- Solar energy
- 4.75 kWh/m²
- Travel score
- 6.9
- out of 10
Angra do Heroísmo is city seat of Angra do Heroísmo municipality, Azores, Portugal.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Day-to-day highs hold fairly steady near 22°C through the month.
A typical September day in Angra do Heroísmo reaches about 22°C in the afternoon and slips back to 21°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 23°C. Set against its neighbours, September runs on par with August and about 2°C warmer than October.
| 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) | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 21 |
| Avg low (°C) | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 22 | 21 |
| 2 | 22 | 21 |
| 3 | 22 | 21 |
| 4 | 22 | 21 |
| 5 | 22 | 21 |
| 6 | 22 | 21 |
| 7 | 22 | 21 |
| 8 | 22 | 21 |
| 9 | 22 | 21 |
| 10 | 22 | 21 |
| 11 | 22 | 21 |
| 12 | 22 | 21 |
| 13 | 22 | 21 |
| 14 | 22 | 21 |
| 15 | 22 | 21 |
| 16 | 22 | 21 |
| 17 | 22 | 21 |
| 18 | 22 | 21 |
| 19 | 22 | 21 |
| 20 | 22 | 21 |
| 21 | 22 | 20 |
| 22 | 22 | 20 |
| 23 | 22 | 20 |
| 24 | 21 | 20 |
| 25 | 21 | 20 |
| 26 | 21 | 20 |
| 27 | 21 | 20 |
| 28 | 21 | 20 |
| 29 | 21 | 20 |
| 30 | 21 | 20 |
Angra do Heroísmo weather by month
How September compares with the rest of the year at a glance. September is the 2nd-warmest and 9th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 16° / 15° | 79 | 11.5 | 9.6 | 4.7 |
| Feb | 15° / 14° | 65 | 10.5 | 10.5 | 4.5 |
| Mar | 15° / 14° | 76 | 10.9 | 11.7 | 4.5 |
| Apr | 16° / 14° | 60 | 9.7 | 13 | 4.8 |
| May | 17° / 16° | 51 | 7.8 | 14.1 | 5.7 |
| Jun | 19° / 18° | 38 | 6.1 | 14.6 | 6.7 |
| Jul | 21° / 20° | 19 | 3.6 | 14.4 | 7.7 |
| Aug | 22° / 21° | 27 | 5.2 | 13.5 | 7.7 |
| Sep | 22° / 21° | 45 | 8.3 | 12.3 | 6.9 |
| Oct | 20° / 19° | 87 | 11.9 | 11 | 6.0 |
| Nov | 18° / 17° | 67 | 9.6 | 9.9 | 5.7 |
| Dec | 17° / 15° | 119 | 13.9 | 9.3 | 4.8 |
Cloud cover in September
The sky is clear or mostly clear about 35% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 23% of September, with mostly cloudy or overcast conditions the remaining 43%. Skies tend to cloud over 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 (%) | 66 | 65 | 64 | 64 | 62 | 62 | 60 | 59 | 58 | 57 | 56 | 56 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 56 | 56 | 56 | 56 | 56 | 55 | 55 | 54 |
| Cloudier (%) | 34 | 35 | 36 | 36 | 38 | 38 | 40 | 41 | 42 | 43 | 44 | 44 | 45 | 45 | 45 | 45 | 45 | 45 | 45 | 45 | 45 | 45 | 44 | 44 | 44 | 44 | 44 | 45 | 45 | 46 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 66 | 34 |
| 2 | 65 | 35 |
| 3 | 64 | 36 |
| 4 | 64 | 36 |
| 5 | 62 | 38 |
| 6 | 62 | 38 |
| 7 | 60 | 40 |
| 8 | 59 | 41 |
| 9 | 58 | 42 |
| 10 | 57 | 43 |
| 11 | 56 | 44 |
| 12 | 56 | 44 |
| 13 | 55 | 45 |
| 14 | 55 | 45 |
| 15 | 55 | 45 |
| 16 | 55 | 45 |
| 17 | 55 | 45 |
| 18 | 55 | 45 |
| 19 | 55 | 45 |
| 20 | 55 | 45 |
| 21 | 55 | 45 |
| 22 | 55 | 45 |
| 23 | 56 | 44 |
| 24 | 56 | 44 |
| 25 | 56 | 44 |
| 26 | 56 | 44 |
| 27 | 56 | 44 |
| 28 | 55 | 45 |
| 29 | 55 | 45 |
| 30 | 54 | 46 |
Chance of precipitation in September
Angra do Heroísmo gets around 45 mm of rain over 8.3 wet days in September. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 28% and peaks near 30% on the wettest days.
| 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 (%) | 24 | 25 | 25 | 26 | 26 | 27 | 28 | 28 | 29 | 29 | 29 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 |
| Rain chance (%) | |
|---|---|
| 1 | 24 |
| 2 | 25 |
| 3 | 25 |
| 4 | 26 |
| 5 | 26 |
| 6 | 27 |
| 7 | 28 |
| 8 | 28 |
| 9 | 29 |
| 10 | 29 |
| 11 | 29 |
| 12 | 30 |
| 13 | 30 |
| 14 | 30 |
| 15 | 29 |
| 16 | 29 |
| 17 | 29 |
| 18 | 29 |
| 19 | 28 |
| 20 | 28 |
| 21 | 28 |
| 22 | 28 |
| 23 | 28 |
| 24 | 28 |
| 25 | 28 |
| 26 | 28 |
| 27 | 28 |
| 28 | 28 |
| 29 | 29 |
| 30 | 29 |
Humidity in September
Most of September feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the muggy band about 36% of days. Sticky, muggy-or-worse air turns up on roughly 40% 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 (%) | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 |
| Comfortable (%) | 12 | 12 | 13 | 14 | 15 | 16 | 16 | 17 | 18 | 19 | 19 | 20 | 21 | 21 | 22 | 23 | 24 | 24 | 25 | 25 | 26 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 |
| Humid (%) | 37 | 37 | 36 | 36 | 35 | 35 | 34 | 34 | 33 | 33 | 32 | 32 | 32 | 33 | 33 | 33 | 33 | 33 | 33 | 34 | 34 | 34 | 34 | 35 | 35 | 35 | 35 | 35 | 35 | 35 |
| Muggy (%) | 42 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 40 | 40 | 40 | 39 | 38 | 37 | 36 | 35 | 34 | 33 | 33 | 32 | 32 | 31 | 31 | 30 | 30 | 29 | 29 | 29 | 29 | 29 |
| Oppressive (%) | 8 | 7 | 7 | 7 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 2 | 12 | 37 | 42 | 8 |
| 2 | 2 | 12 | 37 | 41 | 7 |
| 3 | 2 | 13 | 36 | 41 | 7 |
| 4 | 2 | 14 | 36 | 41 | 7 |
| 5 | 3 | 15 | 35 | 41 | 6 |
| 6 | 3 | 16 | 35 | 41 | 6 |
| 7 | 3 | 16 | 34 | 41 | 6 |
| 8 | 3 | 17 | 34 | 41 | 5 |
| 9 | 4 | 18 | 33 | 40 | 5 |
| 10 | 4 | 19 | 33 | 40 | 5 |
| 11 | 4 | 19 | 32 | 40 | 5 |
| 12 | 4 | 20 | 32 | 39 | 4 |
| 13 | 5 | 21 | 32 | 38 | 4 |
| 14 | 5 | 21 | 33 | 37 | 4 |
| 15 | 5 | 22 | 33 | 36 | 4 |
| 16 | 5 | 23 | 33 | 35 | 4 |
| 17 | 5 | 24 | 33 | 34 | 4 |
| 18 | 6 | 24 | 33 | 33 | 4 |
| 19 | 6 | 25 | 33 | 33 | 3 |
| 20 | 6 | 25 | 34 | 32 | 3 |
| 21 | 6 | 26 | 34 | 32 | 3 |
| 22 | 6 | 26 | 34 | 31 | 3 |
| 23 | 6 | 27 | 34 | 31 | 3 |
| 24 | 6 | 27 | 35 | 30 | 2 |
| 25 | 6 | 27 | 35 | 30 | 2 |
| 26 | 6 | 28 | 35 | 29 | 2 |
| 27 | 6 | 28 | 35 | 29 | 2 |
| 28 | 7 | 28 | 35 | 29 | 1 |
| 29 | 7 | 28 | 35 | 29 | 1 |
| 30 | 7 | 28 | 35 | 29 | 1 |
Wind in September
Winds average 22 km/h in September.
Across September, daily wind ranges from about 20 km/h on the calmest days to 24 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) | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 |
| Feels | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 20 | breezy |
| 2 | 20 | breezy |
| 3 | 20 | breezy |
| 4 | 21 | breezy |
| 5 | 21 | breezy |
| 6 | 21 | breezy |
| 7 | 21 | breezy |
| 8 | 21 | breezy |
| 9 | 22 | breezy |
| 10 | 22 | breezy |
| 11 | 22 | breezy |
| 12 | 22 | breezy |
| 13 | 22 | breezy |
| 14 | 22 | breezy |
| 15 | 22 | breezy |
| 16 | 22 | breezy |
| 17 | 23 | breezy |
| 18 | 23 | breezy |
| 19 | 23 | breezy |
| 20 | 23 | breezy |
| 21 | 23 | breezy |
| 22 | 23 | breezy |
| 23 | 23 | breezy |
| 24 | 23 | breezy |
| 25 | 23 | breezy |
| 26 | 23 | breezy |
| 27 | 23 | breezy |
| 28 | 24 | breezy |
| 29 | 24 | breezy |
| 30 | 24 | breezy |
Sunrise & sunset in September
Daylight runs from about 12 h 54 min at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 78 minutes over September. Sunrise moves from 6:22 AM to 6:49 AM, and sunset from 7:15 PM to 6:28 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) | 12.9 | 12.8 | 12.8 | 12.8 | 12.7 | 12.7 | 12.6 | 12.6 | 12.5 | 12.5 | 12.5 | 12.4 | 12.4 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.0 | 12.0 | 11.9 | 11.9 | 11.9 | 11.8 | 11.8 | 11.7 | 11.7 | 11.6 |
| Sunrise (AM) | 6:22 | 6:23 | 6:24 | 6:25 | 6:26 | 6:27 | 6:28 | 6:28 | 6:29 | 6:30 | 6:31 | 6:32 | 6:33 | 6:34 | 6:35 | 6:36 | 6:37 | 6:38 | 6:39 | 6:39 | 6:40 | 6:41 | 6:42 | 6:43 | 6:44 | 6:45 | 6:46 | 6:47 | 6:48 | 6:49 |
| Sunset (PM) | 7:15 | 7:13 | 7:12 | 7:10 | 7:09 | 7:07 | 7:05 | 7:04 | 7:02 | 7:01 | 6:59 | 6:57 | 6:56 | 6:54 | 6:52 | 6:51 | 6:49 | 6:47 | 6:46 | 6:44 | 6:42 | 6:41 | 6:39 | 6:37 | 6:36 | 6:34 | 6:32 | 6:31 | 6:29 | 6:28 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.9 | 6:22 | 7:15 |
| 2 | 12.8 | 6:23 | 7:13 |
| 3 | 12.8 | 6:24 | 7:12 |
| 4 | 12.8 | 6:25 | 7:10 |
| 5 | 12.7 | 6:26 | 7:09 |
| 6 | 12.7 | 6:27 | 7:07 |
| 7 | 12.6 | 6:28 | 7:05 |
| 8 | 12.6 | 6:28 | 7:04 |
| 9 | 12.5 | 6:29 | 7:02 |
| 10 | 12.5 | 6:30 | 7:01 |
| 11 | 12.5 | 6:31 | 6:59 |
| 12 | 12.4 | 6:32 | 6:57 |
| 13 | 12.4 | 6:33 | 6:56 |
| 14 | 12.3 | 6:34 | 6:54 |
| 15 | 12.3 | 6:35 | 6:52 |
| 16 | 12.2 | 6:36 | 6:51 |
| 17 | 12.2 | 6:37 | 6:49 |
| 18 | 12.2 | 6:38 | 6:47 |
| 19 | 12.1 | 6:39 | 6:46 |
| 20 | 12.1 | 6:39 | 6:44 |
| 21 | 12.0 | 6:40 | 6:42 |
| 22 | 12.0 | 6:41 | 6:41 |
| 23 | 11.9 | 6:42 | 6:39 |
| 24 | 11.9 | 6:43 | 6:37 |
| 25 | 11.9 | 6:44 | 6:36 |
| 26 | 11.8 | 6:45 | 6:34 |
| 27 | 11.8 | 6:46 | 6:32 |
| 28 | 11.7 | 6:47 | 6:31 |
| 29 | 11.7 | 6:48 | 6:29 |
| 30 | 11.6 | 6:49 | 6:28 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 4.75 kWh/m².
For context, solar energy here swings from a low near 1.75 kWh/m² to a high of 6.64 kWh/m² in July across the year — September's 4.75 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) | 5.4 | 5.3 | 5.3 | 5.2 | 5.2 | 5.1 | 5.1 | 5.0 | 5.0 | 4.9 | 4.9 | 4.8 | 4.8 | 4.8 | 4.7 | 4.7 | 4.7 | 4.6 | 4.6 | 4.5 | 4.5 | 4.5 | 4.4 | 4.4 | 4.3 | 4.3 | 4.3 | 4.2 | 4.1 | 4.1 |
| 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 | 5.4 | Bright |
| 2 | 5.3 | Bright |
| 3 | 5.3 | Bright |
| 4 | 5.2 | Bright |
| 5 | 5.2 | Bright |
| 6 | 5.1 | Bright |
| 7 | 5.1 | Bright |
| 8 | 5.0 | Bright |
| 9 | 5.0 | Bright |
| 10 | 4.9 | Bright |
| 11 | 4.9 | Bright |
| 12 | 4.8 | Bright |
| 13 | 4.8 | Bright |
| 14 | 4.8 | Bright |
| 15 | 4.7 | Bright |
| 16 | 4.7 | Bright |
| 17 | 4.7 | Bright |
| 18 | 4.6 | Bright |
| 19 | 4.6 | Bright |
| 20 | 4.5 | Bright |
| 21 | 4.5 | Bright |
| 22 | 4.5 | Bright |
| 23 | 4.4 | Bright |
| 24 | 4.4 | Bright |
| 25 | 4.3 | Bright |
| 26 | 4.3 | Bright |
| 27 | 4.3 | Bright |
| 28 | 4.2 | Bright |
| 29 | 4.1 | Bright |
| 30 | 4.1 | Bright |
Hazard calendar for Angra do Heroísmo
In September, Angra do Heroísmo sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.
Angra do Heroísmo sits in the Atlantic hurricane belt; the season peaks August–October.
Is September a good time to visit Angra do Heroísmo?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is a reasonable time to visit Angra do Heroísmo for sightseeing.
What to pack for Angra do Heroísmo in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Angra do Heroísmo sees daytime highs around 22°C and nights near 21°C. Worth packing: rain gear, sun protection and a windbreaker. About 8 days see rain.
Sea temperature near Angra do Heroísmo in September
The nearest coast averages about 22°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 23°C and coldest in March near 16°C.
It's comfortable for a long swim from Jun 29 to Oct 27 — about 4 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 16 | 16 | 16 | 16 | 17 | 19 | 21 | 23 | 22 | 21 | 19 | 17 |
| Comfort | Cool | Cool | Cool | Cool | Cool | Cool | Refreshing | Refreshing | Refreshing | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 16 | Cool |
| Feb | 16 | Cool |
| Mar | 16 | Cool |
| Apr | 16 | Cool |
| May | 17 | Cool |
| Jun | 19 | Cool |
| Jul | 21 | Refreshing |
| Aug | 23 | Refreshing |
| Sep | 22 | Refreshing |
| Oct | 21 | Refreshing |
| Nov | 19 | Cool |
| Dec | 17 | Cool |
UV index in Angra do Heroísmo in September
Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Angra do Heroísmo peaks around August 10 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 4 | 5 | 6 | 9 | 9 | 9 | 9 | 7 | 5 | 3 | 2 |
| Level | Low | Moderate | High | High | Very high | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 4 | Moderate |
| Mar | 5 | High |
| Apr | 6 | High |
| May | 9 | Very high |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 9 | Very high |
| Sep | 7 | High |
| Oct | 5 | Moderate |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Where is Angra do Heroísmo?
Angra do Heroísmo sits at 38.7°N, 27.2°W, 0 m above sea level, in Portugal. The nearest listed city is Ponta Delgada, 169 km away.
Topography around Angra do Heroísmo
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Angra do Heroísmo.
Within 3 km, the terrain around Angra do Heroísmo has significant variations in elevation — a maximum elevation change of 294 m around an average of 65 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,026 m; within 80 km, large variations in elevation — a maximum elevation change of 1,019 m.
The land around Angra do Heroísmo is covered by water (46%) and trees (21%) within 3 km, water (55%) and grassland (22%) within 16 km, and water (94%) within 80 km.
Portugal travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / E / F
- 230 V · 50 Hz
- Prices
- ≈ 60% of US
- price level, 2025
- GDP per capita
- $32,082
- 2025
- Happiness
- 6.0 / 10
- World Happiness, 2025
- Safe drinking water
- 95%
- of population, 2024
- Homicide rate
- 0.7
- per 100k, 2022
- Road deaths
- 8.2
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very high
- EF EPI 612
- 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 Angra do Heroísmo (38.6539°, -27.2184°, elevation 0 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).