Portugal, Tomorrow Screensaver
The Portugal, Tomorrow screensaver shows the IPMA daily city forecast for Portugal, key-less. The forecast arrives keyed only by an internal location id, so it is joined against IPMA's own districts file to get a place name — without that join every row would read as a seven-digit number. It's free, runs in your browser, and ESC exits.
Live preview
Press ESC to leave fullscreen. Settings are saved in your browser only.
How the Portugal, Tomorrow screensaver works
The saver reads the source described above and draws it on a canvas — no account, no tracking.
The IPMA daily city forecast for Portugal, key-less. The forecast arrives keyed only by an internal location id, so it is joined against IPMA's own districts file to get a place name — without that join every row would read as a seven-digit number.
It refreshes on a schedule, so what you see stays current.
Colours can be changed in settings; nothing is stored beyond your own browser.
About IPMA, Portugal's weather service
IPMA, the Instituto Português do Mar e da Atmosfera, is Portugal's national authority for meteorology, aeronautical meteorology, climate, seismology and geomagnetism, and it also does sea-related research. Its daily city forecast is published as open data for the district capitals and islands, plus a few extra forecast points, and gives each location a minimum and maximum temperature, a precipitation probability and a weather type code.
The code is the part that surprises people. IPMA publishes a number for the significant weather, such as clear sky, light rain or fog, and a separate identifier list translates each number into words. Wind is likewise given as an intensity class and a predominant direction such as N, SE or W, not a measured speed, so the display summarises rather than reproduces a meteorological chart.
Each forecast row is keyed by a location identifier, and IPMA's districts file maps those identifiers to place names. Portugal stretches from the cool, wet northwest to the dry, hot south and the Atlantic islands, which is why the same day can span many degrees between cities. These are forecasts, not observations, and the values for a day can shift as new forecasts are issued.
A worked example
The IPMA daily city forecast for Portugal, key-less. The forecast arrives keyed only by an internal location id, so it is joined against IPMA's own districts file to get a place name — without that join every row would read as a seven-digit number.
Settings & tips
- Accent and Background recolour the display.
- Every value on screen comes from the live source — nothing is simulated.
- Press ESC to leave fullscreen.
Frequently asked questions
- Is this real data?
- Yes — it comes from the source named on this page and is refreshed on a schedule.
- Is a key needed?
- No. This source is fully key-less.
- Is it free?
- Yes, and it runs entirely in your browser.
- What do the minimum and maximum temperatures represent?
- They are the forecast lowest and highest temperatures for the day at that location, not the current temperature.
- Why do the Azores and Madeira appear in the same list as the mainland?
- IPMA's list of forecast locations covers the district capitals and the islands, and the autonomous island regions are part of Portugal.
- How far ahead does the forecast go?
- IPMA's open data offers daily city forecasts for up to five days ahead. This display focuses on the next day's values for each location.