www.metoffice.gov.uk speed test — 20 Oct 2026
Measured from the wfix.shop server on 20 October 2026 at 15:34 UTC. Grade A (95/100), with the screenshots, the timings and the fixes that matter.
Where the first byte went
- DNS lookup 97 ms 26%
- TCP connect 58 ms 16%
- Server wait 217 ms 58%
Measured on the connection that fetched the HTML. Every other request on the page waits for the end of this bar before it can start.
How this page compares
Every report published here is in this comparison, so it is a reference population of pages tested from one server - not a benchmark of the whole web.
What these numbers mean
- The first byte arrived in 371 ms. That is workable, and the cheapest win left is caching or a warmer connection.
- The page transfers 295.0 KB over 26 request(s). Fonts files are 50% of it, so subset the fonts and stop preloading the weights you do not render.
- The HTML itself arrives gzip-compressed.
- It runs over HTTP/3, so the assets share a connection instead of opening one each.
- The largest element painted at 700 ms, inside the 2.5 s Google calls good.
- The main thread was blocked for 69 ms in total, which is not enough to feel.
Fix first: Render-blocking resources - Add defer or async to scripts that do not change the first paint, inline the critical CSS, and load the rest with media="print" plus an onload swap.
Read on one shared server, not a visitor's phone: use it to compare pages against each other, not as a promise about every connection. We fix what these tests find.
Screenshot
What the page looks like
Loaded in headless Chromium on this server. Click an image to open it full size.
Browser render
The same URL loaded in a real browser, so these are the readings curl cannot produce. The grade above is still built from the server measurements.
Page weight by type
What the page is made of
Transfer size, compressed as sent. 26 request(s) in total, 295.0 KB across all of them.
Top issues
Render-blocking resources
high impact4 render-blocking resource(s) in the document head (0 script(s), 4 stylesheet(s)). The page cannot paint until each one arrives.
Fix: Add defer or async to scripts that do not change the first paint, inline the critical CSS, and load the rest with media="print" plus an onload swap.
Avoid extra redirects
medium impact1 redirect hop(s) before the page load started, each one a full round trip before the first byte.
Fix: Link to the canonical URL (and make sure http, the apex domain and www all point at it) so no visitor pays a redirect first.
Waterfall
Slowest requests
Each bar is one request's own response time, scaled to the slowest. Assets were fetched in parallel, so the bars overlap in real time rather than stacking. first party third party
| Request | Type | Status | Time | Size |
|---|---|---|---|---|
| https://www.metoffice.gov.uk/forecast/static/images/forecasts/video-forecasts/[email protected] | images | 200 | 1.01 s | 34.1 KB |
| https://www.metoffice.gov.uk/forecast/static/images/common/icons/chevron-right-grey.svg | images | 200 | 1.01 s | 247 B |
| https://www.metoffice.gov.uk/forecast/static/images/common/app-badges/google-play-badge.svg | images | 200 | 1.01 s | 7.9 KB |
| https://www.metoffice.gov.uk/forecast/static/images/forecasts/video-forecasts/video-preview.jpg | images | 200 | 1.01 s | 17.4 KB |
| https://www.metoffice.gov.uk/forecast/static/images/common/icons/apple-store-badge.svg | images | 200 | 1.01 s | 7.3 KB |
| https://www.metoffice.gov.uk/forecast/static/images/common/icons/chevron-right-white.svg | images | 200 | 1.00 s | 252 B |
| https://weather.metoffice.gov.uk/public/adhoc/mo-adhoc.js?00378e23dae344add396bc70263c9809 3rd party | javascript | 200 | 998 ms | 1.1 KB |
| https://www.metoffice.gov.uk/forecast/static/images/common/icons/google-play-badge.svg | images | 200 | 994 ms | 7.9 KB |
| https://www.metoffice.gov.uk/forecast/static/images/common/app-badges/apple-store-badge.svg | images | 200 | 990 ms | 7.3 KB |
| https://www.metoffice.gov.uk/forecast/static/images/common/icons/mo-green-white.svg | images | 200 | 990 ms | 961 B |
| https://www.metoffice.gov.uk/favicon-dark.png | images | 200 | 982 ms | 2.0 KB |
| https://www.metoffice.gov.uk/forecast/static/images/common/icons/chevron-right-green.svg | images | 200 | 980 ms | 291 B |
| https://www.metoffice.gov.uk/forecast/static/00378e23dae344add396bc70263c9809/css/common/common.css | css | 200 | 972 ms | 7.1 KB |
| https://www.metoffice.gov.uk/manifest.json | other | 200 | 971 ms | 180 B |
| https://www.metoffice.gov.uk/forecast/static/fonts/FSEmericWeb-SemiBold.woff | fonts | 200 | 968 ms | 74.4 KB |
| https://www.metoffice.gov.uk/forecast/static/fonts/FSEmericWeb-Regular.woff | fonts | 200 | 967 ms | 73.7 KB |
| https://www.googletagmanager.com/ns.html?id=GTM-NG48PDS 3rd party | html | 200 | 966 ms | 191 B |
| https://www.metoffice.gov.uk/forecast/static/00378e23dae344add396bc70263c9809/js/search/search.min.js | javascript | 200 | 963 ms | 1.8 KB |
| https://weather.metoffice.gov.uk/public/gdpr-consent/setAbTestConsent.js?00378e23dae344add396bc70263c9809 3rd party | javascript | 200 | 960 ms | 588 B |
| https://www.metoffice.gov.uk/favicon.png | images | 200 | 959 ms | 2.0 KB |
| https://www.metoffice.gov.uk/forecast/static/00378e23dae344add396bc70263c9809/js/common/individual/lazy-load-video-js-block.js | javascript | 200 | 953 ms | 1.0 KB |
| https://www.metoffice.gov.uk/forecast/static/00378e23dae344add396bc70263c9809/js/forecast-common/forecast-common.min.js | javascript | 200 | 950 ms | 8.0 KB |
| https://www.metoffice.gov.uk/forecast/static/00378e23dae344add396bc70263c9809/js/forecast-old/forecast-old.min.js | javascript | 200 | 950 ms | 1.8 KB |
| https://www.metoffice.gov.uk/forecast/static/00378e23dae344add396bc70263c9809/js/common/common.min.js | javascript | 200 | 948 ms | 6.6 KB |
| https://weather.metoffice.gov.uk/public/gdpr-consent/cookieControl-config.js?00378e23dae344add396bc70263c9809 3rd party | javascript | 200 | 947 ms | 2.3 KB |
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