Vienna Half Marathon weather
What will race morning in Vienna cost you?
Vienna Half Marathon mornings around race day since 2021, by weather-model estimate: about 10°C (50°F) at 09:00 near Vienna. Most were 5 to 16°C.
- Date
- Sun, 18 Apr 2027
- First start
- 09:00 local
- Distance
- 21.1 km
| Year | Air | Dew pt | Wind | Rain hrs |
|---|---|---|---|---|
| 2025 | 15°C | 9°C | 15 km/h | 9% |
| 2024 | 10°C | 4°C | 16 km/h | 18% |
| 2023 | 10°C | 7°C | 12 km/h | 36% |
| 2022 | 9°C | 2°C | 14 km/h | 36% |
| 2021 | 7°C | 3°C | 17 km/h | 27% |
By weather-model estimate near the race, mornings around race day. Not station readings.
The Wiener Städtische Half Marathon shares the Vienna City Marathon weekend. Follow the official half-marathon route and wave instructions. Organiser route
Past starts: 10°C typical, 5 to 16°C since 2021.Live forecast opens 4 April.
01 · The conditions
Race-day weather
Race-day forecasts appear 14 days before the race. Until then, here is what race morning has looked like.
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Works with Apple HealthGet Vienna race-morning weather on your phone when it opens.
Set up Vienna in the app now: your goal, your start, your pace plan. The race-morning forecast lands in it in race week.
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Example race: a hot half marathon in Florida
02 · Same effort, different day
What the weather may cost your goal
2:00:00 goal. On a typical race morning here, expect about 2:00 to 2:03. Main factor: wind.
- Heat and sun0%
- Wind and comfort0%
- Weather total0%
RunWeather’s pace model at your goal effort, over every hour you are on course (09:00 to 11:00 local), weighted by the time you spend in each, using the five-year race-morning average. A planning preview, not a predicted finish. Hills, turns, shelter, fuelling and heat adaptation are not modelled here; rain is left out because a probability is not a measured rain rate. Explore the heat pace calculator.
View even-pace checkpoints
| Distance | Elapsed time |
|---|---|
| 5.0 km | 0:28:26 |
| 10.0 km | 0:56:53 |
| 15.0 km | 1:25:19 |
| 20.0 km | 1:53:45 |
| 21.1 km · Finish | 2:00:00 |
In the app
Your race plan, on race morning
Add the Vienna Half Marathon and the app keeps your plan current until the gun.
Goal pace against race-day pace
What your goal is worth on this morning’s weather, per km and at the finish.
How to spend it
Start, middle and finish, against your average.
What slows you
Heat, wind and hills, each in minutes.
Goal vs race day
What slows you
Example race: a hot half marathon in Florida
Reference
Everything else about race morning
Open any row for the full detail.
The course21.1 km
The Wiener Städtische Half Marathon shares the Vienna City Marathon weekend. Follow the official half-marathon route and wave instructions.
RACE MORNING AT 09:002021–20255–16°CWhere most starts fell, in the weather near Vienna around race day. Not a forecast.
- AVERAGE
- 10°C
- HUMIDITY
- 72%
- WIND
- 15 km/h
Official race site ↗01Check the forecast for your half-marathon wave; the full-marathon start schedule may differ.
02Compare the conditions at your start and expected finish before settling on kit and effort.
03Confirm late changes to the route, start wave and logistics with the organiser.
Race-window historyLast 5 years, race date ±5 days
A range for planning Vienna Half Marathon: weather near Vienna on race morning, the last 5 years (2021 to 2025, race date ±5 days). Not a forecast.
Typical start-hour air10°C10th–90th percentile 5°C–16°CDew point / humidity5°C72% relative humidityStart-hour wind15 km/hDirection varies by dayHours with rain25%Historical frequency at this hourAIR THROUGH THE RUN10°C → 14°C by +4hThe five-year picture
09:00- Air temperature
- 10°C
- Humidity
- 72%
- Wind
- 15 km/h
- Hours with rain
- 25%
Hover or drag to explore. Use ← → when focused. Shading: middle 80% of sampled temperatures.
Five-year average Middle 80% of sampled hoursThe sampled air warms by about 4°C across four hours. Check your expected finish-hour forecast, not just the start.
WIND CONTEXTWhere the breeze came from
WIND FROMNW21 of 55 samples · 38%
Mean 14 km/hThe petals show how often the wind came from each direction at the sampled start hour. They do not predict the direction on race day.
A city-point wind rose cannot tell you which parts of the course will be sheltered or exposed. Use the live forecast and the organiser’s route map together.
Method: 55 ERA5 hourly samples at 09:00 local time, across 11 calendar days per year in 2021–2025. The sample uses the hour containing the advertised first start; waves may start later. Grid weather is modelled reanalysis, not an on-course station reading. Open-Meteo Historical Weather API . Data generated 2026-10-12.
April climateAll-hours monthly averages
April averages in Vienna, from 2022 to 2024. These are monthly conditions, not a race-day forecast.
- mean temperature
- 10°C
- mean humidity
- 67%
- mean wind
- 15 km/h
- hours with rain
- 19%
Monthly, all-hours averages for Vienna, 2022–2024. Not past race-day measurements or a forecast. Rain is the share of historical hours with precipitation, not the chance of rain on race day. Source: Open-Meteo ERA5.
Explore running weather in ViennaVienna Half Marathon FAQs7 questions
When is the 2027 Vienna Half Marathon?
Vienna Half Marathon is listed for 18 April 2027. Confirm the latest details on the official event website before travelling.
Is the weather shown a forecast for the Vienna Half Marathon?
Only from about 14 days before the race, when the page shows the live race-day forecast. Before that, you see the weather near the city on the mornings around race day in the last 5 years: what is typical, not what will happen. Monthly averages, when shown, cover every hour of the race month.
What is race morning usually like at the Vienna Half Marathon?
Around the 09:00 start, mornings around race day near Vienna in the last 5 years averaged 10°C (50°F), 72% humidity and 15 km/h wind. Most started between 5°C and 16°C. This is weather near the city, not a reading from the race itself or a forecast.
Which recent year had the warmest race morning at the Vienna Half Marathon?
2025. Around race day that year it was about 15°C (58°F) around the 09:00 start, against 10°C (50°F) on an average year.
Which recent year had the windiest race morning at the Vienna Half Marathon?
2021, with about 17 km/h of wind around the 09:00 start. Over the last 5 years the wind here came mostly from the north-west.
How should I pace the Vienna Half Marathon on a warm day?
2:00:00 goal. On a typical race morning here, expect about 2:00 to 2:03. Main factor: wind. If race day comes in warmer, start a little easier than goal pace, run by feel to halfway and drink early. Plan my race gives your splits for the day.
Can past years predict the weather on race day at the Vienna Half Marathon?
No. They show what race morning is usually like, not what this year will bring. Check the live forecast in the last 14 days, look at the hours through your expected finish, and follow the organiser for start and course updates.
Sources and race informationOrganiser, weather data, guide reviewed 2026-10-12
Past race-morning weather: Open-Meteo Historical Weather API, weather near the city from 2021 to 2025, updated 2026-10-12. Not official race-day readings.
Guide reviewed . RunWeather is an independent guide, not the race organiser. Dates, waves and routes can change; the organiser’s latest instructions take priority.
Vienna race morning, on your phone.
Free on iPhone and Android. Your race plan, updated with the forecast until the gun.
On a computer? Scan with your phone camera to get the app.
Example race: a hot half marathon in Florida