Portugal’s climate is one of the primary reasons families choose it over other European countries — and it largely lives up to its reputation. But the reality is more nuanced than “sunny and warm year-round,” and families who move without understanding the regional and seasonal differences sometimes find their first winter a surprise.
Portugal Has More Than One Climate
The country is small but climatically varied. Three zones matter for relocating families:
Northwest (Porto and the Minho region): The wettest and coolest part of mainland Portugal. Porto averages around 1,200mm of rainfall per year — comparable to London, concentrated between October and March. Summers are warm and mostly dry (25–28°C average in July/August). Winters are mild but grey and rainy, with temperatures rarely dropping below 5°C but frequently hovering in the 10–15°C range — cold enough to feel unpleasant in poorly insulated buildings.
Central coast (Lisbon and surroundings): Warmer and drier than Porto, with longer summer heat. Lisbon averages around 750mm of rain per year. Summers can see extended heat over 35°C in July and August. Winters are mild and sunny by Northern European standards — January averages 12–13°C.
South (Algarve): The warmest and driest region. 300+ sunshine days per year. Rainfall is concentrated in November–February. Summers are hot (regularly 35–40°C inland). The Algarve’s climate is what most people imagine when they think “Portugal weather.”
The Porto Winter: What Families Don’t Expect
We live in Porto. The winters are manageable — we’re not talking Scandinavian cold — but the combination of rain, dampness, and poorly insulated older buildings catches British and Northern European families off guard more than any other aspect of the move.
Portugal’s older housing stock was built for summer. Central heating is uncommon. Single-glazed windows are standard. A beautiful apartment in summer photographs can be genuinely cold and damp in January. We learned this ourselves.
When viewing properties in Porto, check for double-glazing, ask about heating (electric radiators vs. heat pump vs. nothing), look at north-facing walls for signs of damp, and check the insulation under roof spaces. These details matter enormously for winter comfort with children.
Month by Month: What to Expect in Porto
| Month | Average temp | Rainfall | Family notes |
|---|---|---|---|
| January | 12°C | High | Cold indoors, grey, rainy. Good for museums and indoor activities. |
| February | 13°C | High | Same as January. Carnival (Carnaval) mid-month. |
| March | 15°C | Moderate | Starting to brighten. Early spring flowers. |
| April | 17°C | Moderate | Lovely — warm enough for outdoor life, green everywhere. |
| May | 19°C | Low | Excellent. Beach days beginning. |
| June | 22°C | Very low | Warm and sunny. Festas de São João (June 23rd) — Porto’s biggest festival. |
| July | 25°C | Minimal | Peak summer. Beach season fully open. |
| August | 25°C | Minimal | Hot and dry. City quieter as locals and tourists spread to coast. |
| September | 23°C | Low | Excellent — warm, less crowded, sea still warm. |
| October | 19°C | Moderate | Autumn begins. Still lovely for outdoor life. |
| November | 15°C | High | Rain returns. Good time for Douro Valley visit (harvest season just past). |
| December | 12°C | High | Mild by Northern European standards. Christmas markets and lights. |
Is Portugal Too Hot for Children in Summer?
Porto specifically: no, not usually. The city’s Atlantic coast position keeps summer temperatures reasonable. Matosinhos beach is 20 minutes from central Porto and provides a natural cooling effect.
Inland Portugal, the Alentejo, and the interior Algarve in July and August can reach temperatures that require more planning with young children — earlier morning activities, air conditioning, shade, lots of water. Coastal areas are significantly more comfortable.
School Year and Seasons
Portugal’s school year runs mid-September to late June. The structure aligns well with Portugal’s climate — children are in school through the rainy months and free during the driest, warmest period. Summer school programmes and camps are widely available for families who need childcare in July and August.
Climate averages are based on historical data — individual years vary. Building quality varies enormously; view properties in person before committing to a lease.
Planning your move to Portugal? Our free family relocation checklist covers visas, schools, healthcare, and everything you need for the first 30 days.