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Unit
Unit value
Time steps
Hourly
3 Hourly
6 Hourly
Daily
Time interpretation
Time interpretation value
Bits per value

The bitsPerValue determines the relative size of the data download required for each parameter. The bitsPerValue ranges from 1 to 20 bits for our current parameters.

Note the data download size is not a direct multiplier of the bitsPerValue as there are standard overheads within the generated GRIB files which are common for all parameters. However, the bitsPerValue is a good guide to the relative cost of each parameter.

The bits per value may differ across level types.
BitsPerValue value
Bits per value

The bitsPerValue determines the relative size of the data download required for each parameter. The bitsPerValue ranges from 1 to 20 bits for our current parameters.

Note the data download size is not a direct multiplier of the bitsPerValue as there are standard overheads within the generated GRIB files which are common for all parameters. However, the bitsPerValue is a good guide to the relative cost of each parameter.

The bits per value may differ across level types.

Level Type
Bits per value
Level Type
Level type value
Parameter ID
Parameter ID value

Application name

Your application name is used as a link to our gateway through which your API requests are processed. On subscription we automatically create an application for you with a default name. The application name has no bearing on how things are processed.

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By ordering products from the Met Office Weather DataHub and clicking “confirm”, you are agreeing to be bound by the Met Office Weather DataHub Terms and Conditions which apply to the order.

Should you wish to discuss licensing terms, then please call 0033 678 3454 or email licensing@metoffice.gov.uk

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About monthly data usage

API call plans

API call plans are managed using daily request limits. These limits reset each day at 00:00 (UTC).

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About monthly data usage

Data plans

All Atmospheric data plans are managed using gigabytes (GB). We use a base‑1024 conversion across all plans, meaning 1,024 GB is equivalent to 1 TB.

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About monthly data usage

Estimate monthly usage

Estimated order size if all selected data for all runs is taken based on an expected file size per parameter. Note this is a guide only and actual sizes for each parameter will vary.

Whilst every effort has been made to make the estimated file download sizes accurate customers should check the projected figures which are based on actual downloads as well as the estimated file sizes.

Usage this month

This figure is the actual data transferred for this calendar month so far.

Projected Monthly Usage

The projected monthly usage is calculated by:

  • retrieving the amount of data downloaded in the last 30 days
  • divide by the number of active days (>0 bytes downloaded) to get a daily average
  • multiply by the number of days in the current month for maximum monthly usage
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Order Naming

Note when used in the API the order name/ id is transformed by substituting spaces with hyphens and all letters are lowercase e.g. 'GLOBAL10k 12amRun' becomes 'global10k-12amrun'

For the avoidance of doubt the transformed order id to use in the API reproduced below in the Delivery section

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Please update your details there and then return to this tab to proceed with your subscription.

If you have been logged out, you can find the Billing page by clicking on your email address in the top-right corner and then going to 'My Organisation', after logging back in.

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Please check your payment details are correct and resubscribe or contact dpt@metoffice.gov.uk for more information.

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Taxpayer Identification Number (TIN)

The taxpayer identification number (TIN) is the unique identifier assigned to the Account Holder by the tax administration in the Account Holder’s jurisdiction of tax residence. It is a unique combination of letters and/or numbers used to identify an individual or entity for the purposes of administering the tax laws of that jurisdiction.

For more information, please see https://www.gov.uk/hmrc-internal-manuals/international-exchange-of-information/ieim402040

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Known Issues

This page documents known issues with Weather DataHub data, including model‑specific limitations and post‑processing errors that may affect data accuracy or availability.

Current Issues

Wind direction values in the UK deterministic 2km latitude-longitude dataset may be inaccurate due to limitations in the interpolation used during regridding. This limitation is currently under review and we are working towards improving accuracy.

Previous

RESOLVED 09/07/26 - this issue is now resolved. We apologise for any disruption caused to your service or the services you provide.

We are experiencing a technical issue which may cause issues for customers accessing forecast data. Our engineers are working at pace to resolve the problem as soon as possible. We apologise for any disruption this may cause.