Destination · Hourly model wind, 2017 to 2025

Confidence highHourly model data, 2017 to 2025, checked against the season shape of a nearby weather station, a regional model or a documented season.

Kitesurfing in Viana do Castelo, Portugal

Name: Viana do Castelo
Address: PRT

Town in Portugal · 3 kite spots · airports OPO, VGO, VRL

Best for kiting in August, with 50 % kite days. Water 16 °C.

Season 29 Jan to 4 Feb and 26 Feb to 15 Apr and 23 Apr to 10 Jun and 18 Jun to 26 Aug and 10 Dec to 16 Dec.

A kite day has at least 3 hours of 12 to 35 kn model wind between 10:00 and 19:00 in daylight, with gusts up to 45 kn. Percentages are the share of such days in each month, counted over 2017 to 2025.

Numbers on this page are from Viana do Castelo, the main spot of Viana do Castelo. The other 2 spots range from 30 to 32 % kite days in October.

Kite Year

Kite days per month, in % of days. Colour is the verdict, the number is the share. Tap a month for its details.

JJan35Possible
FFeb38Possible
MMar44Good
AApr42Good
MMay45Good
JJun42Good
JJul48Good
AAug50Good
SSep28Possible
OOct30Possiblenow · chosen
NNov34Possible
DDec39Possible

Prime 60 % and more
Good 40 to 59 %
Possible 20 to 39 %
Off under 20 %
No data hatched
Ringed: this month
Raised: your chosen month

Prime also needs a good month in at least 7 of the 9 years, so one freak year cannot make a month Prime. A month with 60 %+ but fewer good years shows as Good.

October in Viana do Castelo, this month, averaged over 2017 to 2025.

KITE DAYS: 9 of 31; 30 % kite days, Possible, good in 0 of 9 years
WIND: 9 knots; afternoon average, 12:00 to 18:00
WATER: 18 °C, 3/2; suit for 18 to 20 °C

3 in 10

trips of 10 days starting in October got at least 5 kite days in 2017 to 2025 (9 Octobers).

about 3.3 kite days expected out of 10.

x in 10 reads: of all 10 day trips that started in that month between 2017 and 2025, x in 10 got at least 5 kite days. We cap the figure at 9 in 10 because wind is never a promise. How we count trip odds

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Live forecast How we count a kite day

Month by month

Tap a month for trip odds, good years, best hours, water, air and rain.

MonthKite days% of days, verdict10 day tripof 10 trips, 5+ kite daysWater°C, what to wear

Kite days
30 % Possibleabout 9 of 31 days
Too light, kiteable, too strong
Too light 70 %
Kiteable 30 %
Too strong 0 %
Good years
0 of 9 years reached 50 % kite days
10 day trip
3 in 10 trips got at least 5 kite days, about 3.3 expected
Best hours
11:00 to 18:00when the wind is most often 12 to 35 knots
Daylight
11.1 h
Water
18 °C, 3/2
Air
18 °Cdaily maximum, 17 °C during kite hours
Rain
14 of 31with 1 mm or more
In one sentence
In October, Viana do Castelo averaged 9 kite days out of 31 (30 %). Water 18 °C, 3/2. 3 in 10 trips of 10 days starting in October got at least 5 kite days.

Viana do Castelo

Kite days% of days	35	38	44	42	45	42	48	50	28	30	34	39
Verdictshare plus good years	Possible	Possible	Good	Good	Good	Good	Good	Good	Possible	Possible	Possible	Possible
10 day tripof 10 trips, 5+ kite days	4 in 10	3 in 10	5 in 10	4 in 10	5 in 10	5 in 10	6 in 10	6 in 10	1 in 10	3 in 10	3 in 10	4 in 10
Good yearsof 9, reached 50 %	0 of 9	2 of 9	3 of 9	3 of 9	3 of 9	3 of 9	4 of 9	3 of 9	0 of 9	0 of 9	1 of 9	0 of 9
Best hourshour of day, most often 12 to 35 kn	11 to 16	11 to 17	12 to 17	15 to 19	15 to 19	14 to 19	15 to 19	15 to 19	15 to 18	11 to 18	12 to 16	12 to 16
Daylighth	9.5	10.6	11.9	13.3	14.5	15.1	14.9	13.9	12.5	11.1	9.9	9.2
Water°C at the surface	14	14	14	16	16	18	17	16	17	18	17	14
Air°C, daily maximum	13	14	15	16	18	19	20	20	20	18	16	14
Rain days1 mm or more	13 of 31	11 of 28	14 of 31	12 of 30	9 of 31	8 of 30	4 of 31	3 of 31	8 of 30	14 of 31	15 of 30	18 of 31
Wetsuitfor that water and the air on kite days, + boots and gloves	5/4	5/4	5/4	5/4	4/3	3/2	4/3	4/3	4/3	3/2	5/4	5/4

In January, Viana do Castelo averaged 11 kite days out of 31 (35 %). Water 14 °C, 5/4. 4 in 10 trips of 10 days starting in January got at least 5 kite days.
In February, Viana do Castelo averaged 11 kite days out of 28 (38 %). Water 14 °C, 5/4. 3 in 10 trips of 10 days starting in February got at least 5 kite days.
In March, Viana do Castelo averaged 14 kite days out of 31 (44 %). Water 14 °C, 5/4. 5 in 10 trips of 10 days starting in March got at least 5 kite days.
In April, Viana do Castelo averaged 13 kite days out of 30 (42 %). Water 16 °C, 5/4. 4 in 10 trips of 10 days starting in April got at least 5 kite days.
In May, Viana do Castelo averaged 14 kite days out of 31 (45 %). Water 16 °C, 4/3. 5 in 10 trips of 10 days starting in May got at least 5 kite days.
In June, Viana do Castelo averaged 13 kite days out of 30 (42 %). Water 18 °C, 3/2. 5 in 10 trips of 10 days starting in June got at least 5 kite days.
In July, Viana do Castelo averaged 15 kite days out of 31 (48 %). Water 17 °C, 4/3. 6 in 10 trips of 10 days starting in July got at least 5 kite days.
In August, Viana do Castelo averaged 15 kite days out of 31 (50 %). Water 16 °C, 4/3. 6 in 10 trips of 10 days starting in August got at least 5 kite days.
In September, Viana do Castelo averaged 8 kite days out of 30 (28 %). Water 17 °C, 4/3. 1 in 10 trips of 10 days starting in September got at least 5 kite days.
In October, Viana do Castelo averaged 9 kite days out of 31 (30 %). Water 18 °C, 3/2. 3 in 10 trips of 10 days starting in October got at least 5 kite days.
In November, Viana do Castelo averaged 10 kite days out of 30 (34 %). Water 17 °C, 5/4. 3 in 10 trips of 10 days starting in November got at least 5 kite days.
In December, Viana do Castelo averaged 12 kite days out of 31 (39 %). Water 14 °C, 5/4. 4 in 10 trips of 10 days starting in December got at least 5 kite days.

Good year: at least half the days of that month were kite days. x in 10 reads: of all 10 day trips that started in that month between 2017 and 2025, x in 10 got at least 5 kite days. We cap the figure at 9 in 10 because wind is never a promise. Best hours: the hours from 10:00 on when the wind most often reaches 12 to 35 knots. Rain day: 1 mm or more of rain.

Source: hourly wind from the ECMWF IFS 9 km via Open-Meteo, hourly model, 2017 to 2025; water temperature 2023 to 2025; kiteCOMPASS method v1. How we count kite days and trip odds

October in Viana do Castelo

this month, averaged over 2017 to 2025.

Kite days: 30 % Possibleabout 9 of 31 days
Too light, kiteable, too strong: Too light 70 %
Kiteable 30 %
Too strong 0 %
Good years: 0 of 9 years reached 50 % kite days
10 day trip: 3 in 10 trips got at least 5 kite days, about 3.3 expected
Best hours: 11:00 to 18:00when the wind is most often 12 to 35 knots
Daylight: 11.1 h
Water: 18 °C, 3/2
Air: 18 °Cdaily maximum, 17 °C during kite hours
Rain: 14 of 31with 1 mm or more
In one sentence: In October, Viana do Castelo averaged 9 kite days out of 31 (30 %). Water 18 °C, 3/2. 3 in 10 trips of 10 days starting in October got at least 5 kite days.

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Confidence

Confidence highhourly model data, close sea cell, checks agree on the season

Why. Hourly model data, 2017 to 2025, checked against the season shape of a nearby weather station, a regional model or a documented season. Shares its model grid cell with 1 nearby spot, so the numbers describe the area, not one beach.

What it means for you. The numbers on this page are a fair forecast of a typical year here. Medium would mean one check is uncertain, for example a cell 12 km away: expect a few points off. Low means global models miss part of the local wind, often at lakes, thermal or inland spots; where documented local sources describe the season, we show that curated season instead of model numbers.

Water and wetsuit

18 °C in October, 3/2 (18 to 20 °C).

Some months get one step thicker, because the air on kite days is more than 4 °C colder than the water.

boardshorts27 and up
shorty24 to 26
spring suit21 to 23
3/218 to 20
4/314 to 17
5/410 to 13
6/5under 10

The filled step is the suit for October; the band under each step is the water temperature it covers, in °C.

14 to 18 °C, 5/4 to 3/2.

Where the model is blind

Here the model sees the wind at Viana do Castelo, so the numbers on this page are model numbers. Where documented local sources describe the season of a lake or thermal spot, we show that curated season instead: a hatched band over the season months with its sources named and no percentage, because the model number would be wrong there.

Getting there

Francisco de Sá Carneiro Airport (OPO), 50 km straight line
Vigo Airport (VGO), 64 km straight line
Vila Real Airport (VRL), 103 km straight line

Flight time from

FRA Frankfurt: about 2 h 30 min straight line, 1,631 km
MUC Munich: about 2 h 45 min straight line, 1,775 km
AMS Amsterdam: about 2 h 25 min straight line, 1,563 km
LHR London Heathrow: about 2 h 05 min straight line, 1,261 km
ZRH Zurich: about 2 h 25 min straight line, 1,515 km
CDG Paris Charles de Gaulle: about 2 h straight line, 1,204 km

Flight time: the straight line distance at 800 km/h plus 30 minutes. Real flights with stops take longer. Flights are not sold here.

Best time to kitesurf in Viana do Castelo

Best for kiting in August, with 50 % kite days. Water 16 °C.

Season 29 Jan to 4 Feb and 26 Feb to 15 Apr and 23 Apr to 10 Jun and 18 Jun to 26 Aug and 10 Dec to 16 Dec. Dates from 52 weekly values of the main spot, season from 40 % kite days, peak from 60 %, counted only in weeks with water or daytime air at 12 °C or more and at least 6 hours of daylight.

Trip odds by start week

Pick your start week and trip length. Each cell: of all trips of that length that started in that week between 2017 and 2025, how many in 10 got at least half their days with kite wind.

Trip odds by start week, 10 day trips, 2017 to 2025

Colours as in the kite year: 6 in 10 and more like Prime · 4 to 5 in 10 like Good · 2 to 3 in 10 like Possible · under 2 in 10 like Off · No data hatched (fewer than 30 trips) · Ringed: this week · Raised: your start week

x in 10 reads: of all 10 day trips that started in that week between 2017 and 2025, x in 10 got at least 5 kite days. We cap the figure at 9 in 10 because wind is never a promise.

Source: hourly wind from the ECMWF IFS model via Open-Meteo, 2017 to 2025, kiteCOMPASS method v1. How we count

Start date

4 in 10

trips of 10 days starting in week 45 (e.g. 5 to 11 November) got at least 5 kite days in 2017 to 2025 (63 trips).

Zero wind trips: 2 in 10

about 3.2 kite days expected out of 10

Kite days per trip, 63 trips

Bars right of the line are good trips (5 kite days or more).

Is Viana do Castelo windy?

Across the year, 40 % of days at Viana do Castelo are kite days. The windiest month is August with 50 %, the calmest is September with 28 %.

Wind on kite days in August comes most often from NNW (338°).

Share of kite days by wind direction, 16 sectors

Afternoon wind9 knots(8 to 11 kn, average 12:00 to 18:00 in October)

under 8 kn
8 to 11 kn
12 to 15 kn
16 to 19 kn
20 to 24 kn
25 to 29 kn
30 kn and more

Main kite wind by month: Jan S, Feb S, Mar NNW, Apr NNW, May NNW, Jun NNW, Jul NNW, Aug NNW, Sep NNW, Oct S, Nov S, Dec S.

Live forecast

The numbers above are long term averages. The forecast shows the next days.

Live forecast from Windy

The forecast map for Viana do Castelo comes from windy.com (Windyty SE, Prague, Czech Republic) and opens right here on this page. Once you load it, your browser contacts Windy, which receives your IP address and may set its own cookies. Nothing is loaded before you click.

Water temperature in Viana do Castelo by month

The sea is warmest in June at 18 °C and coolest in January at 14 °C. Wetsuit: 5/4 in January, 3/2 in June.

Water temperature from the Open-Meteo marine archive, 2023 to 2025, monthly mean of the main spot.

Kite spots in Viana do Castelo

Viana do Castelo
Sea · main spot
1. J
2. F
3. M
4. A
5. M
6. J
7. J
8. A
9. S
10. O
11. N
12. D
Kite days by month at Viana do Castelo: Jan 35 %, Feb 38 %, Mar 44 %, Apr 42 %, May 45 %, Jun 42 %, Jul 48 %, Aug 50 %, Sep 28 %, Oct 30 %, Nov 34 %, Dec 39 %
Rodanho
Sea · 1 km
Same model cell as Viana do Castelo: near identical numbers.
1. J
2. F
3. M
4. A
5. M
6. J
7. J
8. A
9. S
10. O
11. N
12. D
Kite days by month at Rodanho: Jan 35 %, Feb 38 %, Mar 44 %, Apr 42 %, May 45 %, Jun 42 %, Jul 48 %, Aug 50 %, Sep 28 %, Oct 30 %, Nov 34 %, Dec 39 %
Afife
Sea · 12 km
1. J
2. F
3. M
4. A
5. M
6. J
7. J
8. A
9. S
10. O
11. N
12. D
Kite days by month at Afife: Jan 35 %, Feb 39 %, Mar 47 %, Apr 37 %, May 43 %, Jun 37 %, Jul 38 %, Aug 36 %, Sep 26 %, Oct 32 %, Nov 39 %, Dec 42 %

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kiteCOMPASS · method k3h-10to19-v1 · 2017 to 2025

Model wind: ECMWF IFS 9 km via Open-Meteo, hourly, 2017 to 2025. Water temperature: 2023 to 2025. Kite day: at least 3 hours of 12 to 35 kn model wind between 10:00 and 19:00 in daylight, with gusts up to 45 kn. Shares its model grid cell with 1 nearby spot, so the numbers describe the area, not one beach. Confidence: high.

Cite this

In October, 30 % of days at Viana do Castelo met the kiteCOMPASS kite day rule: at least 3 hours of 12 to 35 kn model wind between 10:00 and 19:00 in daylight, with gusts up to 45 kn (ECMWF IFS 9 km via Open-Meteo, hourly, 2017 to 2025). https://kitecompass.app/kitesurfing/viana-do-castelo

Download CSV (12 months)

Numbers on this page are free to reuse under CC BY 4.0: name kiteCOMPASS and link to this page.