- Save up to £300 on summer 2021 holidays in TUI sale
- Discount varies by spend. COVID cover included
- Travel between 1st May & 31st Oct 2021 (inclusive)
Lisbon weather in August 2021
Get the latest coronavirus (COVID-19) updates for Portugal with current travel advice, statistics and online resources.
- 28°C max day temperature
28 - 11 hours of sunshine per day
- 2 days with some rainfall
2 - 18°C min night temperature
18 - 14 hours of daylight per day
14 - Moderate heat & humidity
M - 5 mm of monthly rainfall
5 - 8 (Very High) UV index
8 - 19°C sea temperature
19
Recommended for Portugal
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
The August weather guide for Lisbon, Portugal shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Show discount code
******ALE
******ALE
Expires at 23:59 on Sunday 28th Feb 2021 · View all TUI offers
TUI deal finder
How hot is it in Lisbon in August?
Daytime temperatures usually reach 28°C in Lisbon in August with moderate heat and humidity, falling to 18°C at night.
How sunny is it in Lisbon in August?
There are normally 11 hours of bright sunshine each day in Lisbon in August - that's 80% of daylight hours.
How warm is the sea around Lisbon in August?
The average sea temperature around Lisbon in August is 19°C.
Does it ever rain in Lisbon in August?
There are usually 2 days with some rain in Lisbon in August and the average monthly rainfall is 5mm.
Lisbon sunrise & sunset times for August 2021
Browse the sunrise & sunset times for Lisbon in August 2021. Select a month to view Lisbon sunrise & sunset times for the next twelve months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Sunday, 1st August 2021 | 06:38 | 20:47 |
| Monday, 16th August 2021 | 06:51 | 20:30 |
| Tuesday, 31st August 2021 | 07:05 | 20:08 |
- Save up to £300 on summer 2021 holidays in TUI sale
- Discount varies by spend. COVID cover included
- Travel between 1st May & 31st Oct 2021 (inclusive)
Show discount code
******ALE
******ALE
Expires at 23:59 on Sunday 28th Feb 2021 · View all TUI offers
TUI deal finder
Metric (°C / mm) | Imperial (°F / inches)
Discover more about Portugal
Where is hot in Portugal in August for 2021/2022?
Below are average maximum temperatures at popular destinations in Portugal in August. Select a destination to see more weather parameters.
Be inspired
Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers
We promise not to share your details
Related posts
Popular travel offers
*affiliate links: find out how we are funded and why this helps us remain free to use.