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Historical weather data for Basel can be downloaded freely without any restrictions.

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More information about history+


You can select start and end dates with the integrated date picker, or enter the desired date range with your keyboard.

history+ locations (0/0)
Customers with history+ can see their activated locations here. Access remains active for 1 year. Basel is available for free evaluation.


Your activated locations are listed here. You can switch to another location by clicking on the name, or compare data with the current location by checking the box.

Show help


  • ERA5T is the recommended option if you are interested only in historical weather. The data is available starting 1940 in hourly time steps, with a slight delay of 8 days. Due to the absence of satellite observations before 1980, the data from 1940 to 1980 has a lower accuracy than the data from 1980 onwards. This dataset does not contain current weather or forecast data.
  • For machine learning applications, or whenever historical data is combinded with realtime forecasts, use the NEMS models. meteoblue is the only company in the world, which can provide 30 years of weather history that is 100% consistent with the current 180 hour forecast. The consistent forecast data is available from a special version of our weather API, contact: [email protected]
  • ERA5 is a legacy version of ERA5T and should not be used anymore. It will be removed in the near future.


This graph allows a quick look over the data that can be downloaded. Long data series are dynamically aggregated to daily or monthly values. It automatically refreshes on changes.

You can zoom by click and drag to left or right. A click on a weather variable name in the legend below the chart hides the data series for better readability.








Weather variables information

  • Temperature (2m) and relative humidity (2m): Comparable to measurements at 2 meters above ground.
  • Pressure: Atmospheric air pressure adjusted to mean sea level as most commonly used for weather reports. The local pressure varies with altitude. Locations at higher elevation have a lower local atmospheric pressure.
  • Precipitation amount: Total precipitation amount including rain, convective precipitation and snow. 1 mm at 10:00 is comparable to a rain-gauge measurement from 9:00-10:00.
  • Snowfall amount: Fraction of total precipitation that falls as snow and is converted to cm instead of mm.
  • Total cloud cover: Percentage of the sky covered with clouds: 50% means half of the sky is covered. 0-25% is mostly clear sky, 25-50% partly cloudy, 50-85% mostly cloudy and above 85% overcast.
  • Low, mid, high cloud cover: Cloud cover at different altitudes. High clouds (8-15 km) like Cirrus, are less significant for total cloud cover than mid clouds (4-8 km) like Alto-Cumulus and Alto-Stratus, or low clouds (below 4 km), like Stratus, Cumulus and fog.
  • Solar radiation: Global radiation (diffuse and direct) on a horizontal plain given in Watt per square meter.
  • Wind speed: Hourly average wind speeds at given altitude levels (e.g. 10 and 80 meters above ground) or pressure level (e.g. 900 hPa). Units can be selected.
  • Wind direction: Wind direction in degrees, seamlessly from 0° (wind blowing from North), 90° (East wind), 180° (South wind) and 270° (West wind) to 359°.
  • Wind gusts: Short term wind speed turbulence in an hour. Gusts are maximum measurable wind speed and indicate the level of turbulence. They are mostly higher than regular wind speeds.
Please note: the dataset between 1940 and 1980 might have lower accuracy than the data from 1980 onwards due to the absence of satellite data.


Time zone

All data will use the selected timezone. There is no automatic switching for daylight saving time. Data are either summer or winter-time. The current timezone is selected automatically. We highly recommend GMT+00 for further processing.


Aggregate data to daily minimum, mean, maximum and summation in CSV download. This simplifies further data analyses in external programs.


Parameter for growing degree days (GDD)

Adjust base and limit parameter for growing degree calculation. A limit-value lower than base, calculates the temperature cold sum.

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