March · Portugal
Best time to visit Cascais in March Weather, crowds & prices
Weather in Cascais in March
Average temperature 14°C, 76 mm of rain, about 15 days with 6+ hours of sunshine and 80% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
March score
4.3/10
Ranked #8 of 12 months
- Avg temp
- 14°C
- Rainfall
- 76 mm
- Humidity
- 80%
- Days with 6h+ sun
- 15
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
March in Cascais scores 4.3/10 for beach and coastal travel - ranked #8 of 12. Expect around 14°C, 76 mm of rain, and roughly 15 days with 6+ hours of sunshine this month.
Cascais pairs a walkable former fishing town with sheltered beaches, an Atlantic promenade, and the wilder coast toward Guincho.
March in Cascais — the hardest end of the year
Temperatures hover around 14°C (58°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 76 mm of rain this month — a flexible day or two helps — with about 15 days with 6+ hours of sunshine and 11.7 hours of daylight to work around it.
That is 4.3/10 on the same scale — 8th of 12 months, versus 8.5/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Expect mid-season pricing, and crowds are moderate.
If your dates are flexible, August is materially better in Cascais — 4.2 points higher on the same scale.
Frequently asked
- What is the weather like in Cascais in March?
- In March, Cascais averages 14°C, 76 mm of rain, and about 15 days with 6+ hours of sunshine. Its climate-comfort score is 4.3/10.
- Is March a good time to visit Cascais?
- March earns a 4.3/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Cascais in March?
- Expect about 76 mm of rain in March. Average humidity is 80% and there are about 15 days with 6+ hours of sunshine.
Curated in Cascais
Tickets & experiences
Things to do in Cascais
Cascais, Portugal. Live activities and tours from GetYourGuide, matched to this destination.