Speedwell Weather has what is believed to be one of the largest private sector databases of high quality world-wide
weather data. We are a single point of contact for the provision of weather data to the energy, agriculture, commodity,
insurance and weather risk markets. Weather data supplied by Speedwell Weather comes from official bodies, sourced via
direct data supply agreements with a large range of national meteorological and hydrographic services rather than just
publicly available free data offered by many other suppliers.
Speedwell Weather is the dominant provider of weather data for settlement of weather-risk contracts world-wide.
“We consider weather data as a form of financial market data.”
Our origins as a weather data provider lie in the weather risk market. As a result, we understand the importance of data quality. We
quality control data from thousands of sites to correct errors and, where necessary and possible, fill missing values.
Over the years we have come across a lot of bad weather data! As a matter of policy, for
reasons of quality, we do not deliver data derived from GSOD archives (unless specifically requested).
If you see a difference between the data we provide and data sourced from other sources we will not be surprised. There is a lot of bad data out there!!!!
Please contact us for a detailed explanation of the pitfalls of some commonly used public archives of weather data. These can be different not just in detail but fundamentally.
Click here for more information on the limitation of the GSOD weather data set.
Speedwell SuperPack makes available an unprecedented range of quality historical weather data and weather data feeds for a single annual fee. The SuperPack licence
applies corporate-wide across multiple office locations: One contract, one fee, covers all data. SuperPack users have immediate access to a catalogue of many
thousands of data sets - and growing. These data sets are shown on the Data Inventory Map Tool.
Use this tool to see percentage completeness statistics, to access data tools such as Actuals-Vs-Climatology and the Weather Statistics Extractor; and to download
the data directly from the web site. Subscribers can request an unlimited number of historical data sets and real-time feeds by FTP.
The list of weather sites available for immediate access is continuously growing: In addition, SuperPack subscribers can also request any data from our secondary
archives of many tens of thousands of weather sites around the world. SuperPack offers a dramatic simplification of the contractual and legal admin involved in data
Click here for more details on SuperPack®.
SuperPack-Light is for sophisticated weather data users, including those
following the agri-markets, who require large volumes of high quality world wide
data but who do not need the full-service provided under the full SuperPack
subscription. SuperPack-Light is a corporate-wide subscription delivering to up
to a maximum of 1,500 user-chosen daily data sets by FTP which can be selected
from over 21,000 data sets...all at zero marginal cost. SuperPack-Light
subscribers also receive access to additional data download from the website and
use of web-delivered tools such as Actuals-Vs-Climatology and the Weather
Click here for more information on SuperPack-Light®
Cleaned Data Sets
Weather data is often incomplete and may contain erroneous values. Our Cleaned
Data Sets correct erroneous values and fill missing data. We carry over 11,000 cleaned historical data sets of temperature and rainfall, amongst other
variables and we clean over 5,000 sites per day. We also provide cleaned hourly
data sets and feeds.
Quality, provenance and auditability
We believe data quality control ("Cleaning") is a very
serious business. Our origins as a weather data provider lie in the weather risk
markets where we have acted as settlement agent in hundreds of over-the-counter
weather risk transactions. This represents the sternest test of data quality and
provenance. We see weather data as a type of financial market data.
Our cleaning techniques build on a very substantial software, hardware and
human resource infrastructure which builds on a database storing daily and
hourly data for over 90,000 worldwide weather reference sites. Our tools alert
us to improbable values by the use of methods including proxy testing, analysis
of hourly reports and satellite imagery. However, we believe weather data
cleaning can never, and should never,
be fully automated. Our data cleaning processes are always manually overseen by
We also understand the importance of data provenance. At Speedwell we
store our data in a strict hierarchy that provides transparency on issues such
as source, reporting convention and quality. While clients can request to
receive our data as a "best-of" feed, we can also provide data showing these
component data types:
Click here for more information.
World Hydro Correlation Study 2013: Please contact us for information and prices
Hourly Frequency Reports
We are able to provide hourly frequency reports for any hourly weather variable and for any period. The most frequently requested product is the hourly
frequency report covering a specific year and shown by month. This shows how many hours in temperature interval were recorded in each month of that year.
Click here for an
annotated example. Hourly Frequency Reports can be provided for any variable for any site for which we carry hourly data. We carry historic hourly data for many
thousands of sites in Europe, Australia, Asia and the Americas.
Hourly Average Temperature Data Sets ("Climatologies")
Many clients approach us to buy hourly data which they use to calculate an
average value for each hour for each day of the year. This is something we can
provide saving the costs of buying and handling large hourly data sets. The
output is a file with 24*366 data points and can be delivered by FTP or by
email. This can be provided for any variable for any site for which we carry
hourly data. The average can be calculated with or without kernel smoothing. The
average can be based on any period with 10 years being the most requested. We
carry historic hourly data for many thousands of sites in Europe, Australia,
Asia and the Americas.
Click here for more
information on Climatologies.
European Wind storms: Historic data and real-time feeds.
We offer an archive of maximum gust, average wind speed and wind direction from 1970.
This has an exceptionally high granularity and includes sub-hourly reports. We can provide
hourly data updates by FTP to support verification of insurance claims or for the valuation of CAT-bonds
throughout the year. The variables we can supply are hourly maximum gust,
hourly average wind speed, hourly wind direction and hourly surface pressure.
Data is based on both METAR and Synoptic reports.
Click here for more information on European Wind storms.
Standard Historical Weather Data Packs.
We have over 1,000 different packs of weather data.
These include packs defined by country, by sector (e.g. China cotton growing areas) or by weather variable (e.g. hourly Germany data pack for power market
analysts). These data packs can be viewed on our map tool. All sites are also available individually.
Click here to view Data Inventory Map
Click here to view a comprehensive list of available data packs
Weather Data Packs by Region Click here for a map viewer or our data
packs, including inventory statistics.
Agri-Weather: Weather Data Packs for Agriculture
Click here to see
our selection of data packs covering agri regions.
Weather Data Packs for Energy
Please also see hourly country data
packs above or where not separately listed the main country pack.
In most countries where we show
limited hourly data, we can provide more on request. Please contact us
Population Weighted Baskets ("Flexes")
We offer a very wide range of population weighted temperature and rainfall products. These are used to model energy demand. For each basket we are able to provide the historical data set,
daily feeds and a fully downscaled ensemble forecast. We also provide smoothed climatologies.
Click here to see the sites which are used for each Population Weighted basket.
Hourly Weather Data
Hourly Weather Data Packs and
individual sites: We carry hourly weather data for thousands of sites
around the world and can provide real-time feeds. Hourly data can be cleaned on
Hourly Temperature Frequency Reports:
We can provide reports for any site summarising the number of hours in each temperature bucket by month / year. Click here for an example. Please also
contact us for Daily Station Reports, Monthly Summary Data and Rainfall Return
Individual Historical Data Sets and Feeds:
Historical Data: We pride
ourselves on being able to satisfy the most testing requests for weather data
from our archives of 90,000+ data sets. Data can be delivered by email, FTP or
through our web-download tool.
Weather Data Feeds: We can
provide data feeds of sub hourly, hourly and daily data for any weather
Recalibrated Data Sets adjust historical temperature series to current observing conditions. Most sites, especially US airports, display numerous discontinuities.
Corrections for discontinuities can make a profound impact on the understanding
of the behaviour of a site.
Click here for more information on Recalibrated Data Sets
delivered tool for spotting discontinuities as they happen in the reporting of
temperature due to site moves, instrument changes etc. The relationship of a
reference site to a synthetic site derived from a basket of surrounding sites is
monitored in real-time with information presented in a configurable graphical
format. This service is included as part of the subscription to Recalibrated