The most detailed information about the water temperature in Cascais in Atlantic Ocean (Lisbon, Portugal). Forecast of changes in water temperature for the next 10 days. Statistics by months for recent years. Information about the neighboring resorts. Weather forecast in Cascais for a week.
Water temperature in Cascais right now
data updated 8 minutes ago61°F
yesterday: 61°F
a week ago: 61°F
Trend: stability
Today water temperature in Cascais is 61.7°F. This is cool bathing water, but acceptable for short dives for physically fit and hardened people. Continuous exposure to such water for more than four hours can lead to severe hypothermia. In any case, the general weather is also important. So, the air temperature at the same time will reach 62°F.
Analysis and forecast
The water temperature today roughly corresponds to the average value on this day in recent years. Its value has rise both over the past 20 days and over the past week. Exactly a year ago, on this day, the water temperature in this location was 62°F. Water temperature range in Cascais in April is from 57 to 64 degrees.
According to our forecast, the water temperature in Cascais will move in different directions, in the coming days the water will become warmer, but after 10 days it will still get a little colder to 61°F.
Table of water temperature values in Cascais
| Day | Fact* | Average** | Forecast*** |
| Apr 18 | 15.5°C | 16.0°C | |
| Apr 19 | 15.6°C | 15.5°C | |
| Apr 20 | 15.6°C | 16.0°C | |
| Apr 21 | 16.4°C | 15.8°C | |
| Apr 22 | 15.8°C | 16.0°C | |
| Apr 23 | 16.3°C | 16.3°C | |
| Apr 24 | 16.3°C | 16.0°C | |
| Apr 25 | 16.5°C | 16.3°C | |
| Apr 26 | 16.5°C | 16.7°C | |
| Apr 27 | 16.8°C | 17.0°C | |
| Apr 28 | 16.8°C | 17.0°C | |
| Apr 29 | 16.3°C | 16.5°C | |
| Apr 30 | 16.0°C | 16.2°C | |
| May 1 | 16.3°C | 16.5°C | |
| May 2 | 15.8°C | 16.0°C |
** Average - Average water temperature on this day in past years
*** Forecast - Our forecast for the water temperature
Actual nearshore temperatures may vary by several degrees from the indicated values. This is noticeable after heavy rain or after prolonged periods of strong winds. Some downstream winds cause cold, deep waters to replace surface waters that have been warmed by the sun.
To develop a forecast, we use our own mathematical model, which takes into account the current change in water temperature, historical data and the main weather trends, wind strength and direction, air temperature in each specific region. We also take into account data for other resorts in Portugal.
Annual graph of average water temperature change in Cascais
Water temperature in Cascais by month
Cascais located in the northern hemisphere, at latitude 38 degrees. The comfortable water temperature for swimming is set here in July, almost always only at the end of the month. During a year in Cascais there are 32 days of swimming. In general, the swimming season ends in October. Average annual water temperature on the coast in Cascais is 63°F, by the seasons: in winter 60°F, in spring 60°F, in summer 66°F, in autumn 66°F. Minimum water temperature (56°F) in Cascais it happens in March, maximum (72°F) in August.
You can find out detailed data on how the water temperature in Cascais changes in each specific month:
Cascais: general information and map
Neighboring cities and resorts
| City | Water* | Distance** |
| Santa Marta | 61°C | 1km |
| Estoril | 60°C | 2km |
| Marinha | 61°C | 4km |
| Parede | 61°C | 6km |
| Arriba | 61°C | 6km |
| Praia do Guincho | 61°C | 6km |
| Praia da Grota | 61°C | 7km |
| Carcavelos | 61°C | 7km |
| Praia de Assentiz | 61°C | 11km |
| Paco de Arcos | 61°C | 11km |
| Cabo da Roca | 61°C | 11km |
| Sintra | 61°C  | 12km |
** Straight line distance in kilometers
The warmest water today in Portugal recorded in Funchal, its value is 68°F. Lowest - in Matosinhos, there water temperature now 59°F. Average water temperature in the country today - 61°F.
Water temperature data in Cascais and neighboring towns and resorts collected from various sources, using buoys, using satellite maps of sea, river and lake surfaces of the NOAA agency.
We use data from various local authorities in each specific location of the world to more accurately reflect temperature values.
The nearest airport is located in a 6 kilometers. This is Cascais (CAT) airport. We have no information as to whether it is valid and what flights it receives or sends.
Cascais: weather forecast
The weather forecast is shown in local time in Cascais
32km/hhumidity: 59%, clouds: 50%
30km/hhumidity: 65%, clouds: 1%
29km/hhumidity: 69%, clouds: 1%
23km/hhumidity: 67%, clouds: 75%
16km/hhumidity: 80%, clouds: 81%
21km/hhumidity: 74%, clouds: 80%
20km/hhumidity: 63%, clouds: 90%
18km/hhumidity: 66%, clouds: 85%
28km/hhumidity: 71%, clouds: 90%
29km/hhumidity: 69%, clouds: 93%
27km/hhumidity: 67%, clouds: 72%
30km/hhumidity: 73%, clouds: 96%
37km/hhumidity: 64%, clouds: 77%
30km/hhumidity: 68%, clouds: 51%
28km/hhumidity: 65%, clouds: 42%
25km/hhumidity: 63%, clouds: 70%
21km/hhumidity: 51%, clouds: 81%
22km/hhumidity: 50%, clouds: 39%
21km/hhumidity: 56%, clouds: 23%
16km/hhumidity: 74%, clouds: 9%
13km/hhumidity: 70%, clouds: 5%
12km/hhumidity: 75%, clouds: 1%
9km/hhumidity: 75%, clouds: 2%
7km/hhumidity: 63%, clouds: 15%
18km/hhumidity: 60%, clouds: 14%
23km/hhumidity: 55%, clouds: 0%
25km/hhumidity: 63%, clouds: 0%
21km/hhumidity: 67%, clouds: 4%
16km/hhumidity: 73%, clouds: 3%
15km/hhumidity: 74%, clouds: 3%
25km/hhumidity: 76%, clouds: 10%
29km/hhumidity: 60%, clouds: 0%
29km/hhumidity: 58%, clouds: 35%
29km/hhumidity: 56%, clouds: 100%
27km/hhumidity: 59%, clouds: 73%
