Heavy rain, strong winds and dangerous coastal conditions are forecast across mainland Portugal, Madeira and Porto Santo.
The Foreign Office (FCDO)said the greatest risk is expected on Wednesday (11 November).
“The weather may cause flooding, landslides, falling trees and travel disruption. Schools and public services may also close at short notice,” it added.
In Madeira and Porto Santo, severe weather is expected from Tuesday evening (10 November) into Wednesday 11 November, particularly in exposed and mountainous areas.
The FCDO said visitors should follow the advice of local authorities and check MeteoAlarm for the latest weather warnings.
