Sant Joan d'Alacant — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Sant Joan d'Alacant (Valencia, Spain). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Sant Joan d'Alacant help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Sant Joan d'Alacant in the Balearic Sea today is 22°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Water temperature in Sant Joan d'Alacant has risen over the last week and month. Currently, the sea water at this location is slightly warmer than average for this day in previous years.
According to our forecast, Water temperature in Sant Joan d'Alacant will be 22.5°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 2 | 21.8°C | 20.8°C | |
| JUN 3 | 22.1°C | 21.5°C | |
| JUN 4 | 22.3°C | 21.5°C | |
| JUN 5 | 22.5°C | 21.5°C | |
| JUN 6 | 22.6°C | 21.8°C | |
| JUN 7 | 22.5°C | 21.8°C | |
| JUN 8 | 22.6°C | 21.5°C | |
| JUN 9 | 22.5°C | 21.3°C | |
| JUN 10 | 22.4°C | 21.3°C | 22.4°C |
| JUN 11 | 21.8°C | 22.4°C | |
| JUN 12 | 21.8°C | 22.4°C | |
| JUN 13 | 22.0°C | 22.5°C | |
| JUN 14 | 22.0°C | 22.5°C | |
| JUN 15 | 21.8°C | 22.5°C | |
| JUN 16 | 22.5°C | 22.5°C | |
| JUN 17 | 22.5°C | 22.5°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
San Juan de Alicante is a long, sandy Mediterranean shore just northeast of Alicante town, known for broad beaches and relatively stable seas. Water temperatures follow the typical Mediterranean cycle: in winter months the sea usually cools to around 14–17 °C, spring sees a gradual rise to roughly 15–20 °C, summer brings the warmest conditions with sea temperatures commonly between 22–27 °C, and autumn typically ranges from about 18–24 °C as the warmth lingers after summer. These averages reflect the sheltered bay and shallow nearshore areas, where the water warms sooner in late spring and holds heat into early autumn, producing a reliably temperate coastal environment through much of the year.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 14°C | 15°C | 17°C |
| February | 13°C | 15°C | 16°C |
| March | 13°C | 15°C | 17°C |
| April | 14°C | 17°C | 19°C |
| May | 16°C | 19°C | 22°C |
| June | 19°C | 22°C | 26°C |
| July | 22°C | 25°C | 29°C |
| August | 24°C | 26°C | 29°C |
| September | 20°C | 25°C | 28°C |
| October | 18°C | 22°C | 26°C |
| November | 15°C | 20°C | 24°C |
| December | 14°C | 17°C | 19°C |
* Click on a month to view detailed water temperature data.
Sant Joan d'Alacant: Weather Forecast
June 10
June 11
June 12
Location, Beaches & Local Information
Nearby Beaches & Facilities
Muchavista
La Albufereta
San Juan
Carrer Del Mar
Serragrossa
La Almadraba
Cala Dels Jueus / Cala De Los Judios
Cala De La Palmera
Cala Cantalars
Swimming Conditions
Swimming and beach holidays at San Juan are centered on easy access to the water, long shallow gradients and a wide beachfront that accommodates families and active visitors alike. The summer months, when the sea is around 22–27 °C, are most comfortable for prolonged swimming, sunbathing and water play without thermal protection; late spring and early autumn can be pleasant for those who tolerate slightly cooler water of about 15–20 °C or 18–24 °C respectively, while winter swims at 14–17 °C generally require a wetsuit for most people. Facilities, promenades and rental options for paddle sports and snorkeling make it straightforward to combine swimming with other seaside activities, and on calmer days the clear, shallow water is ideal for casual snorkeling and children’s swimming close to shore.