São Tiago de Custoias weather in October

In October, São Tiago de Custoias sees average daytime highs of 19°C and overnight lows near 15°C, with 148 mm of rain across 12.5 wet days and about 10.9 hours of daylight. It is the 5th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 20°C in the first days to 18°C by the end. The sky is clear or mostly clear about 36% of the time in October, and the air most often feels comfortable.

Daylight stretches from about 11 h 36 min at the start of October to 10 h 12 min by month's end. Set against the rest of the year, October is São Tiago de Custoias's 9th-clearest and 10th-windiest month. For the whole year in context, see São Tiago de Custoias's year-round climate.

Daytime high
19°
5th warmest
Overnight low
15°
8th coldest
Rainfall
148 mm
12.5 wet days
Daylight
10 h 54 min
6:53 AM – 5:46 PM
Cloud cover
54%
9th clearest
Wind
15 km/h
10th windiest
Solar energy
3.25 kWh/m²
Travel score
5.9
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 20°C in the first days to 18°C by the end.

A typical October day in São Tiago de Custoias reaches about 19°C in the afternoon and slips back to 15°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 22°C. Set against its neighbours, October runs about 3°C cooler than September and about 3°C warmer than November.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12016
22016
32016
42016
52016
62016
72016
82016
92015
102015
112015
121915
131915
141915
151915
161915
171915
181915
191915
201915
211915
221915
231814
241814
251814
261814
271814
281814
291814
301814
311814

São Tiago de Custoias weather by month

How October compares with the rest of the year at a glance. October is the 5th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan13° / 13312.39.43.5
Feb14° / 919.310.33.9
Mar15° / 11°10610.211.74.7
Apr16° / 12°10711.213.15.1
May18° / 14°9010.414.36.1
Jun21° / 16°315.514.97.4
Jul22° / 18°183.414.78.4
Aug23° / 18°223.813.68.4
Sep22° / 17°546.312.37.4
Oct19° / 15°14812.510.95.9
Nov16° / 12°15613.39.74.6
Dec14° / 10°15112.89.13.8

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 16% of October, with mostly cloudy or overcast conditions the remaining 48%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16040
25941
35941
45941
55842
65842
75743
85743
95644
105644
115545
125545
135446
145446
155347
165347
175248
185149
195149
205050
214951
224951
234852
244654
254654
264456
274456
284357
294357
304258
314258

Chance of precipitation in October

Any precipitation

São Tiago de Custoias gets around 148 mm of rain over 12.5 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 41% and peaks near 48% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
128
229
330
431
532
633
734
835
936
1037
1138
1239
1341
1442
1543
1643
1744
1845
1945
2045
2146
2246
2346
2446
2547
2647
2747
2847
2947
3048
3148

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the comfortable band about 42% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11944352
22044342
32144332
42243322
52343312
62443302
72643292
82744282
92844272
102944262
113044252
123144241
133244231
143244231
153344221
163344221
173444211
183543211
193543211
203643211
213642201
223742201
233841201
243940201
254040201
264139191
274338190
284437180
294637170
304836160
315035150

Wind in October

Winds average 15 km/h in October.

Across October, daily wind ranges from about 14 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over October. Sunrise moves from 6:37 AM to 7:11 AM, and sunset from 6:10 PM to 5:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:376:10
211.56:386:09
311.56:396:07
411.46:406:05
511.46:416:04
611.36:426:02
711.36:436:00
811.26:445:59
911.26:455:57
1011.16:465:55
1111.16:485:54
1211.16:495:52
1311.06:505:51
1411.06:515:49
1510.96:525:47
1610.96:535:46
1710.86:545:44
1810.86:565:43
1910.76:575:41
2010.76:585:40
2110.76:595:38
2210.67:005:37
2310.67:015:36
2410.57:035:34
2510.57:045:33
2610.47:055:31
2710.47:065:30
2810.47:075:29
2910.37:095:28
3010.37:105:26
3110.27:115:25

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.25 kWh/m².

For context, solar energy here swings from a low near 1.68 kWh/m² to a high of 7.33 kWh/m² in July across the year — October's 3.25 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.1Bright
24.0Bright
34.0Moderate
43.9Moderate
53.9Moderate
63.8Moderate
73.8Moderate
83.7Moderate
93.6Moderate
103.6Moderate
113.5Moderate
123.4Moderate
133.4Moderate
143.3Moderate
153.3Moderate
163.2Moderate
173.1Moderate
183.1Moderate
193.0Moderate
203.0Moderate
212.9Moderate
222.9Moderate
232.8Moderate
242.8Moderate
252.8Moderate
262.7Moderate
272.7Moderate
282.6Moderate
292.6Moderate
302.5Moderate
312.5Moderate
Planning a trip in October

Hazard calendar for São Tiago de Custoias

In seasonPeak

In October, São Tiago de Custoias sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

São Tiago de Custoias's rainy season runs October–May, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is October a good time to visit São Tiago de Custoias?

Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.9
Sightseeing
6th-best month of the year
2.6
Beach & pool
5th-best month of the year

October is a reasonable time to visit São Tiago de Custoias for sightseeing.

What to pack for São Tiago de Custoias in October

From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In October, São Tiago de Custoias sees daytime highs around 19°C and nights near 15°C. Worth packing: rain gear. About 13 days see rain.

rain gear

Sea temperature near São Tiago de Custoias in October

The nearest coast averages about 17°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in September at about 17°C and coldest in February near 13°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

12°14°16°18°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar14Bracing
Apr14Bracing
May16Cool
Jun17Cool
Jul17Cool
Aug17Cool
Sep17Cool
Oct17Cool
Nov16Cool
Dec14Bracing

UV index in São Tiago de Custoias in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in São Tiago de Custoias peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 23UV 9Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7High
Jun9Very high
Jul9Very high
Aug8Very high
Sep5High
Oct4Moderate
Nov2Moderate
Dec2Low

Air quality in São Tiago de Custoias in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in São Tiago de Custoias is worst in September — around 19 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (November, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModerateGoodSep 1318 µg/m³Nov 237 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar12Moderate
Apr11Good
May9Good
Jun9Good
Jul8Good
Aug16Moderate
Sep19Moderate
Oct13Moderate
Nov7Good
Dec7Good
Location & terrain

Where is São Tiago de Custoias?

São Tiago de Custoias sits at 41.2°N, 8.6°W, 84 m above sea level, in Portugal. The nearest listed city is Leça do Bailio, 1.0 km away.

Topography around São Tiago de Custoias

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São Tiago de Custoias.

Within 3 km, the terrain around São Tiago de Custoias has only modest variations in elevation — a maximum elevation change of 114 m around an average of 75 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 377 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,453 m.

The land around São Tiago de Custoias is covered by artificial surfaces (56%) and trees (23%) within 3 km, trees (29%), water (29%) and artificial surfaces (25%) within 16 km, and trees (41%), water (27%) and grassland (23%) within 80 km.

3 km
114 m
16 km
377 m
80 km
1,453 m
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Leça do Bailio 1.0 km · São Mamede de Infesta 2.0 km · Senhora da Hora 2.0 km · Maia 4.0 km · Paranhos 4.0 km · Aldoar 5.0 km · Águas Santas 5.0 km · Matosinhos 5.0 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
Catholic 68%not applicable 13%no religion 12%no response 2%

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 São Tiago de Custoias (41.2°, -8.6333°, elevation 84 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. 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. 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).