The most detailed information about the water temperature in Mariehamn in Baltic Sea (Finland). 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 Mariehamn for a week.
Water temperature in Mariehamn right now
data updated 45 minutes ago36°F
yesterday: 35°F
a week ago: 35°F
Trend: slow rise
Today water temperature in Mariehamn is 36.1°F. At this temperature, you can only immerse yourself in water for a few minutes. But it should be remembered that even for trained and seasoned people, this can be dangerous. In any case, the general weather is also important. So, the air temperature at the same time will reach 37°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 39°F. Water temperature range in Mariehamn in April is from 30 to 41 degrees.
According to our forecast, the water temperature in Mariehamn will slowly rise for at least the next 10 days and reach a value of 37°F.
Table of water temperature values in Mariehamn
| Day | Fact* | Average** | Forecast*** |
| Apr 18 | 1.5°C | 2.0°C | |
| Apr 19 | 1.5°C | 3.0°C | |
| Apr 20 | 1.9°C | 3.3°C | |
| Apr 21 | 1.8°C | 2.8°C | |
| Apr 22 | 1.9°C | 2.5°C | |
| Apr 23 | 2.0°C | 3.0°C | |
| Apr 24 | 2.3°C | 2.5°C | |
| Apr 25 | 2.3°C | 2.8°C | |
| Apr 26 | 2.8°C | 2.3°C | |
| Apr 27 | 2.8°C | 2.3°C | |
| Apr 28 | 2.5°C | 2.1°C | |
| Apr 29 | 3.5°C | 2.9°C | |
| Apr 30 | 3.8°C | 3.1°C | |
| May 1 | 3.0°C | 2.5°C | |
| May 2 | 3.3°C | 2.7°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 Finland.
Annual graph of average water temperature change in Mariehamn
Water temperature in Mariehamn by month
Mariehamn located in the northern hemisphere, at latitude 60 degrees. The comfortable water temperature for swimming is set here in July, usually at the beginning of the month. During a year in Mariehamn there are 43 days of swimming. In general, the swimming season ends in August. Average annual water temperature on the coast in Mariehamn is 45°F, by the seasons: in winter 35°F, in spring 35°F, in summer 64°F, in autumn 45°F. Minimum water temperature (32°F) in Mariehamn it happens in January, maximum (72°F) in August.
You can find out detailed data on how the water temperature in Mariehamn changes in each specific month:
Mariehamn: general information and map
Neighboring cities and resorts
| City | Water* | Distance** |
| Eckero | 36°C | 26km |
| Foglo | 36°C | 26km |
| Havsvidden | 36°C | 36km |
| Kumlinge | 36°C | 49km |
| Simpnas | 35°C | 55km |
| Kokar | 36°C | 58km |
| Graddo | 36°C | 62km |
| Grisslehamn | 36°C | 62km |
| Norrtalje | 34°C | 78km |
| Blido | 35°C | 79km |
| Houtskar | 36°C | 81km |
| Marieberg | 36°C | 81km |
** Straight line distance in kilometers
The warmest water today in Finland recorded in Rosund, its value is 36°F. Lowest - in Olhava, there water temperature now 32°F. Average water temperature in the country today - 34°F.
Water temperature data in Mariehamn 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 3 kilometers. This is Mariehamn (MHQ) airport. We have no information as to whether it is valid and what flights it receives or sends.
Mariehamn: weather forecast
The weather forecast is shown in local time in Mariehamn
14km/hhumidity: 89%, clouds: 98%
17km/hhumidity: 90%, clouds: 100%
18km/hhumidity: 84%, clouds: 100%
19km/hhumidity: 96%, clouds: 100%
23km/hhumidity: 97%, clouds: 100%
24km/hhumidity: 96%, clouds: 100%
18km/hhumidity: 97%, clouds: 100%
12km/hhumidity: 97%, clouds: 100%
10km/hhumidity: 96%, clouds: 100%
5km/hhumidity: 100%, clouds: 100%
3km/hhumidity: 99%, clouds: 100%
12km/hhumidity: 97%, clouds: 100%
16km/hhumidity: 96%, clouds: 100%
18km/hhumidity: 96%, clouds: 100%
18km/hhumidity: 83%, clouds: 100%
16km/hhumidity: 79%, clouds: 100%
9km/hhumidity: 79%, clouds: 100%
6km/hhumidity: 75%, clouds: 99%
5km/hhumidity: 73%, clouds: 100%
5km/hhumidity: 70%, clouds: 90%
12km/hhumidity: 72%, clouds: 56%
9km/hhumidity: 75%, clouds: 39%
3km/hhumidity: 79%, clouds: 65%
11km/hhumidity: 78%, clouds: 100%
10km/hhumidity: 80%, clouds: 100%
13km/hhumidity: 83%, clouds: 82%
15km/hhumidity: 79%, clouds: 89%
19km/hhumidity: 79%, clouds: 99%
20km/hhumidity: 81%, clouds: 98%
20km/hhumidity: 83%, clouds: 100%
21km/hhumidity: 83%, clouds: 98%
25km/hhumidity: 80%, clouds: 68%
23km/hhumidity: 84%, clouds: 82%
24km/hhumidity: 88%, clouds: 95%
29km/hhumidity: 83%, clouds: 97%
31km/hhumidity: 81%, clouds: 99%
33km/hhumidity: 83%, clouds: 99%
32km/hhumidity: 82%, clouds: 100%
