Climate Insights for Areosa

Viana do Castelo, Distrito de Viana do Castelo, Portugal

Hottest
July
19°C peak
Coldest
January
10°C low
Wettest
December
207mm rain
Best to Visit
May, June, July
Mild temps & low rain

Climate Overview

The climate in Areosa is temperate. The average annual temperature is 15°C and approximately 1388mm of precipitation falls per year. December is the wettest month, receiving around 207mm of rainfall. Areosa is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, September. The coldest months are January, February, March, when temperatures can drop to 10°C.

Temperature

10° 15° 20° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 13° Average: 12° Min: 10° Feb Max: 13° Average: 12° Min: 11° Mar Max: 14° Average: 12° Min: 11° Apr Max: 15° Average: 14° Min: 12° May Max: 16° Average: 15° Min: 14° Jun Max: 17° Average: 17° Min: 16° Jul Max: 19° Average: 18° Min: 17° Aug Max: 19° Average: 18° Min: 17° Sep Max: 18° Average: 17° Min: 16° Oct Max: 18° Average: 17° Min: 15° Nov Max: 16° Average: 15° Min: 13° Dec Max: 14° Average: 13° Min: 12°
Max
Average
Min

Areosa has relatively stable temperatures year-round, staying within a 9°C range. July is the warmest month, though highs remain moderate at 19°C with a mean of 18°C. January is the coolest month, with minimum temperatures around 10°C and an average of 12°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows. The sharpest temperature change occurs between October and November, with a 2°C shift in average temperatures.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 172mm Feb Precipitation: 135mm Mar Precipitation: 144mm Apr Precipitation: 125mm May Precipitation: 93mm Jun Precipitation: 40mm Jul Precipitation: 12mm Aug Precipitation: 21mm Sep Precipitation: 63mm Oct Precipitation: 199mm Nov Precipitation: 177mm Dec Precipitation: 207mm
Precipitation

Areosa is a fairly wet location, receiving approximately 1388mm of precipitation annually, which averages out to around 116mm per month. The wettest month is December, averaging 207mm of rainfall. October and November also tend to see above-average precipitation. The driest month is July, with just 12mm. That's 194mm less than December, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Wind

0km/h 5km/h 10km/h 15km/h 20km/h 25km/h 30km/h 35km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 31km/h Feb Wind Speed: 31km/h Mar Wind Speed: 32km/h Apr Wind Speed: 29km/h May Wind Speed: 29km/h Jun Wind Speed: 27km/h Jul Wind Speed: 28km/h Aug Wind Speed: 28km/h Sep Wind Speed: 25km/h Oct Wind Speed: 29km/h Nov Wind Speed: 31km/h Dec Wind Speed: 31km/h
Wind Speed

Areosa is moderately windy, with an average annual wind speed of 29km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 32km/h, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in September, with average winds dropping to 25km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 7km/h between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 31km/h in winter, 30km/h in spring, 28km/h in summer, 28km/h in autumn.

Seasons

Winter
Dec 21
Spring
Mar 20
Summer
Jun 21
Autumn
Sep 23

89 days until Summer

It is currently spring in Areosa, which began on March 20, 2026. Areosa is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 19°C, while the coldest stretch bottoms out in January near 10°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

Spring

Temperatures range from 11 to 16°C. Rainfall is heavy, totalling around 361mm across the season with a monthly average of 120mm. Winds are strong, averaging 30km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 16 to 19°C. Rainfall is relatively light, with around 73mm over the season and a monthly average of 24mm. Winds are strong, averaging 28km/h. Comfortable clothing with a light layer for cooler evenings is all you need.

Autumn

Temperatures range from 13 to 18°C. Rainfall is heavy, totalling around 439mm across the season with a monthly average of 146mm. Winds are strong, averaging 28km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 10 to 14°C. Rainfall is heavy, totalling around 515mm across the season with a monthly average of 172mm. Winds are strong, averaging 31km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Best Time to Visit

Jan 12°
Feb 12°
Mar 12°
Apr 14°
May 15°
Jun 17°
Jul 18°
Aug 18°
Sep 17°
Oct 17°
Nov 15°
Dec 13°

The best time to visit Areosa is during May, June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 46mm per month. By contrast, January can be quite cold with temperatures dropping to 10°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

Monthly Climate Data

The table below shows monthly climate averages for Areosa based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
10 °C
13 °C
31 km/h
172 mm
0 cm
Feb
11 °C
13 °C
31 km/h
135 mm
0 cm
Mar Current
11 °C
14 °C
32 km/h
144 mm
0 cm
Apr
12 °C
15 °C
29 km/h
125 mm
0 cm
May
14 °C
16 °C
29 km/h
93 mm
0 cm
Jun
16 °C
17 °C
27 km/h
40 mm
0 cm
Jul
17 °C
19 °C
28 km/h
12 mm
0 cm
Aug
17 °C
19 °C
28 km/h
21 mm
0 cm
Sep
16 °C
18 °C
25 km/h
63 mm
0 cm
Oct
15 °C
18 °C
29 km/h
199 mm
0 cm
Nov
13 °C
16 °C
31 km/h
177 mm
0 cm
Dec
12 °C
14 °C
31 km/h
207 mm
0 cm
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Metric (°C, km/h)