Hottest (avg)
#6 / 12
Lisbon in May
May weather, climate averages, and packing tips.
Avg High
Avg Low
Rain
Daylight 14h
What to expect
May marks a typically mild period of spring, where temperatures are climbing noticeably. Daytime highs average 21°C / 70°F, dropping to 14°C / 58°F at night.
You can expect a mix of sun and cloud, with about 8 days seeing some rain. The sun is very strong at this time of year, making sun protection essential during the day.
May in context
How it compares to the rest of the year in Lisbon.
Wettest (avg)
#8 / 12
Daylight Hours
#3 / 12
Windiest (avg)
#4 / 12
Highest UV
#3 / 12
Most Humid
#9 / 12
Temperature
- Daytime high
-
- Nighttime low
-
- Feels like (avg)
-
Sunshine
- Daylight
- 14.3 hours
- UV index (max)
- 8
- Typical sun hours
- 05:24 – 19:41
Rain & Snow
- Total
-
- Rainy days
- 8
- Cloud cover
- 45%
- Snowfall
-
Humidity & Wind
- Humidity (avg)
- 73%
- Wind (avg)
-
- Wind (max gusts)
-
Frequently asked questions
Is May a good time to visit Lisbon?
Typical May days in Lisbon reach highs of 21°C (70°F) with nights around 14°C (57°F). It usually feels mild by day and cool after dark. Overall, May sits in the middle of the Lisbon climate range.
What are temperatures like in May?
In May, you can usually expect highs of 21°C (70°F) and lows near 14°C (57°F). That means mild days and cool nights, so pack layers you can add or remove.
How much does it rain in May?
Rainfall in May averages 40 mm (1.6 in) across roughly 8 days. Overall it is a moderately wet time of year, so showers are usually brief rather than all-day downpours.
How many hours of daylight are there in May?
You can expect about 14 hours of daylight in May. Sunrise is typically around 05:24 and sunset near 19:41. You get long days with comfortable amounts of daylight.
Does the weather change during May?
May often starts off a little cooler and becomes noticeably warmer by the end of the month.
How strong is the sun in May?
UV levels frequently reach very high levels (around 8), so strong sun protection is essential, especially around midday.
Is it windy in May?
In May, average wind speeds are around 17 km/h (11 mph), with gusts on the windiest days reaching about 54 km/h (34 mph). On the ground, it is it can feel quite windy at times, particularly when weather systems move through.