Sea · Istanbul · Turkey
Henna Island
Best for kiting in August, with 63 % kite days. Water 25 °C.
A kite day has at least 3 hours of 12 to 35 knots (gusts up to 45) between 10:00 and 19:00, in daylight. Percentages are the share of such days in each month, counted over 9 years.
- Prime 60 % and more
- Good 40 to 59 %
- Possible 20 to 39 %
- Off under 20 %
- No data hatched
- Ringed: this 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.
Confidence highClose model cell, both models agree on the season, 9 full years.
Month by month
- Kite days
- 31 % Possibleabout 10 of 31 days
- Too light, kiteable, too strong
- Too light 69 %
- Kiteable 31 %
- Too strong 0 %
- Good years
- 1 of 9 years reached 50 % kite days
- 10 day trip
- 2 in 10 trips got at least 5 kite days, about 2.9 expected
- Best hours
- 16:00 to 17:00when the wind is most often 12 to 35 knots
- Daylight
- 11.2 h
- Water
- 20 °C, 4/3
- Air
- 20 °Cdaily maximum, 19 °C during kite hours
- Rain
- 7 of 31with 1 mm or more
- In one sentence
In October, Henna Island averaged 10 kite days out of 31 (31 %). Water 20 °C, 4/3. 2 in 10 trips of 10 days starting in October got at least 5 kite days.
| Kite days% of days | 43 | 45 | 34 | 30 | 28 | 28 | 48 | 63 | 42 | 31 | 32 | 38 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Verdictshare plus good years | cold | cold | cold | Possible | Possible | Possible | Good | Prime | Good | Possible | Possible | Possible |
| 10 day tripof 10 trips, 5+ kite days | 5 in 10 | 5 in 10 | 3 in 10 | 2 in 10 | 2 in 10 | 2 in 10 | 7 in 10 | 7 in 10 | 4 in 10 | 2 in 10 | 3 in 10 | 4 in 10 |
| Good yearsof 9, reached 50 % | 3 of 9 | 4 of 9 | 1 of 9 | 0 of 9 | 0 of 9 | 1 of 9 | 4 of 9 | 8 of 9 | 3 of 9 | 1 of 9 | 0 of 9 | 1 of 9 |
| Best hourshour of day, most often 12 to 35 kn | 10 to 17 | 10 to 18 | 15 to 18 | 16 to 19 | 16 to 19 | 16 to 19 | 16 to 19 | 16 to 19 | 16 to 18 | 16 to 17 | 16 to 17 | 10 to 17 |
| Daylighth | 9.6 | 10.6 | 11.9 | 13.3 | 14.4 | 15.1 | 14.8 | 13.8 | 12.5 | 11.2 | 10.0 | 9.3 |
| Water°C at the surface | 11 | 9 | 10 | 12 | 15 | 21 | 25 | 25 | 24 | 20 | 17 | 13 |
| Air°C, daily maximum | 10 | 10 | 11 | 14 | 19 | 24 | 27 | 27 | 24 | 20 | 16 | 13 |
| Rain days1 mm or more | 13 of 31 | 10 of 28 | 11 of 31 | 8 of 30 | 8 of 31 | 6 of 30 | 4 of 31 | 2 of 31 | 6 of 30 | 7 of 31 | 9 of 30 | 12 of 31 |
| Wetsuitfor that water and the air on kite days, + boots and gloves | 6/5+ | 6/5+ | 6/5+ | 5/4 | 4/3 | spring | shorty | shorty | shorty | 4/3 | 5/4 | 6/5+ |
- In January, Henna Island averaged 13 kite days out of 31 (43 %). Water 11 °C, 6/5 with boots and gloves. 5 in 10 trips of 10 days starting in January got at least 5 kite days.
- In February, Henna Island averaged 13 kite days out of 28 (45 %). Water 9 °C, 6/5 with boots and gloves. 5 in 10 trips of 10 days starting in February got at least 5 kite days.
- In March, Henna Island averaged 11 kite days out of 31 (34 %). Water 10 °C, 6/5 with boots and gloves. 3 in 10 trips of 10 days starting in March got at least 5 kite days.
- In April, Henna Island averaged 9 kite days out of 30 (30 %). Water 12 °C, 5/4. 2 in 10 trips of 10 days starting in April got at least 5 kite days.
- In May, Henna Island averaged 9 kite days out of 31 (28 %). Water 15 °C, 4/3. 2 in 10 trips of 10 days starting in May got at least 5 kite days.
- In June, Henna Island averaged 8 kite days out of 30 (28 %). Water 21 °C, spring suit. 2 in 10 trips of 10 days starting in June got at least 5 kite days.
- In July, Henna Island averaged 15 kite days out of 31 (48 %). Water 25 °C, shorty. 7 in 10 trips of 10 days starting in July got at least 5 kite days.
- In August, Henna Island averaged 20 kite days out of 31 (63 %). Water 25 °C, shorty. 7 in 10 trips of 10 days starting in August got at least 5 kite days.
- In September, Henna Island averaged 12 kite days out of 30 (42 %). Water 24 °C, shorty. 4 in 10 trips of 10 days starting in September got at least 5 kite days.
- In October, Henna Island averaged 10 kite days out of 31 (31 %). Water 20 °C, 4/3. 2 in 10 trips of 10 days starting in October got at least 5 kite days.
- In November, Henna Island averaged 9 kite days out of 30 (32 %). Water 17 °C, 5/4. 3 in 10 trips of 10 days starting in November got at least 5 kite days.
- In December, Henna Island averaged 12 kite days out of 31 (38 %). Water 13 °C, 6/5 with boots and gloves. 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: ECMWF IFS 9 km via Open-Meteo, hourly model wind, 2017 to 2025; water temperature 2023 to 2025. How we count kite days and trip odds
Trip odds at Henna Island
How often a trip of your length got at least half its days with kite wind, 2017 to 2025, capped at 9 in 10.
- January5 in 10 trips of 10 days got at least 5 kite days, about 4.4 expected
- February5 in 10 trips of 10 days got at least 5 kite days, about 4.3 expected
- March3 in 10 trips of 10 days got at least 5 kite days, about 3.5 expected
- April2 in 10 trips of 10 days got at least 5 kite days, about 2.9 expected
- May2 in 10 trips of 10 days got at least 5 kite days, about 2.7 expected
- June2 in 10 trips of 10 days got at least 5 kite days, about 3.1 expected
- July7 in 10 trips of 10 days got at least 5 kite days, about 5.1 expected
- August7 in 10 trips of 10 days got at least 5 kite days, about 6.1 expected
- September4 in 10 trips of 10 days got at least 5 kite days, about 4.0 expected
- October (now)2 in 10 trips of 10 days got at least 5 kite days, about 2.9 expected
- November3 in 10 trips of 10 days got at least 5 kite days, about 3.3 expected
- December4 in 10 trips of 10 days got at least 5 kite days, about 3.8 expected
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.
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
- 5
- 4
- 7
- 5
- 5
- 7
- 4
- 4
- 2
- 3
- 3
- 3
- 3
- 2
- 0
- 2
- 3
- 3
- 2
- 1
- 1
- 1
- 1
- 2
- 2
- 4
- 5
- 7
- 6
- 7
- 9
- 9
- 7
- 6
- 6
- 4
- 3
- 5
- 4
- 3
- 2
- 1
- 1
- 2
- 1
- 3
- 5
- 4
- 3
- 4
- 5
- 3
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
1 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 2.2 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).
How the wind behaves
In August, the windiest month
- Too light 37 %
- Kiteable 63 %
- Too strong 0 %
Too light on 37 %, kiteable on 63 %, too strong on 0 % of days.
Best hours: 16:00 to 19:00, when the wind is most often 12 to 35 knots.
Share of kite days by wind direction, 16 sectors
Wind steadily from NE (45°).
Kitesurfing at Henna Island: quick answers
When is the best time to kitesurf at Henna Island?
The best month is August: from 2017 to 2025, 63 % of its days were kite days.
Is Henna Island windy in October?
Sometimes. 31 % of days in October were kite days from 2017 to 2025, about 10 days in a typical October. 2 in 10 trips of 10 days starting in October got at least 5 kite days, 2017 to 2025.
What is the water temperature at Henna Island?
The water ranges from 9 °C in February to 25 °C in July. In October it is about 20 °C (wetsuit: 4/3).
How many kite days does Henna Island get in a year?
About 141 days a year were kite days from 2017 to 2025, out of 365. 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.
Live forecast
The numbers above are long term averages. The forecast shows the next days.
Live forecast from Windy
The forecast map for Henna Island 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.
Spot facts
- Region
- Istanbul
- Country
- Turkey
- Water body
- Sea, from Natural Earth map data
- Nearest airport
- Istanbul Sabiha Gökçen International Airport (SAW), 21 km straight line. Flights are not sold here; this is for planning only.
- Time zone
- UTC+03:00 in October
- Coordinates
- 40.9056, 29.0576
- Model
- ECMWF IFS 9 km via Open-Meteo, hourly
Conditions, checked against kite guides
Water state, flat areas, waves and whether schools teach here, from kite sources, not from satellite images.
Not yet checked against kite guides. We research spot conditions one by one and show only what a kite source says.
Nearby kite spots in Istanbul
Kite days in October, % of days
- Metro Park
Turkey · 9 points more kite days than Henna Island in October
40 %Kite days by month at Metro Park: Jan 50 %, Feb 47 %, Mar 37 %, Apr 34 %, May 31 %, Jun 36 %, Jul 58 %, Aug 70 %, Sep 49 %, Oct 40 %, Nov 42 %, Dec 39 % - Burç Beach
Turkey · 17 points more kite days than Henna Island in October
48 %Kite days by month at Burç Beach: Jan 60 %, Feb 55 %, Mar 48 %, Apr 32 %, May 27 %, Jun 28 %, Jul 43 %, Aug 65 %, Sep 51 %, Oct 48 %, Nov 53 %, Dec 53 % - Doğancılı
Turkey · 1 point more kite days than Henna Island in October
32 %Kite days by month at Doğancılı: Jan 37 %, Feb 44 %, Mar 37 %, Apr 22 %, May 16 %, Jun 17 %, Jul 27 %, Aug 46 %, Sep 41 %, Oct 32 %, Nov 33 %, Dec 33 % - Karaburun Plaj
Turkey · 13 points more kite days than Henna Island in October
44 %Kite days by month at Karaburun Plaj: Jan 59 %, Feb 55 %, Mar 46 %, Apr 32 %, May 26 %, Jun 29 %, Jul 39 %, Aug 60 %, Sep 52 %, Oct 44 %, Nov 50 %, Dec 53 %
Plan your trip
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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. Confidence: high.
Cite this
In October, 31 % of days at Henna Island 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/spot/henna-island
Numbers on this page are free to reuse under CC BY 4.0: name kiteCOMPASS and link to this page.