Santiago de Compostela — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Santiago de Compostela, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Santiago de Compostela today is 17.8°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| SEP 13 | 18.5°C | 18.0°C | |
| SEP 14 | 19.0°C | 18.0°C | |
| SEP 15 | 19.1°C | 18.0°C | |
| SEP 16 | 18.9°C | 18.0°C | |
| SEP 17 | 19.0°C | 18.0°C | |
| SEP 18 | 19.2°C | 18.0°C | |
| SEP 19 | 17.8°C | 18.0°C | |
| SEP 20 | 17.5°C | 18.0°C | |
| SEP 21 | 18.0°C | 17.8°C | |
| SEP 22 | 18.0°C | 17.8°C | |
| SEP 23 | 18.0°C | 17.8°C | |
| SEP 24 | 18.0°C | 17.8°C | |
| SEP 25 | 18.0°C | 17.9°C | |
| SEP 26 | 18.0°C | 17.9°C | |
| SEP 27 | 18.0°C | 17.9°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.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 5°C | 9°C | 11°C |
| February | 5°C | 9°C | 11°C |
| March | 7°C | 10°C | 13°C |
| April | 9°C | 12°C | 16°C |
| May | 10°C | 15°C | 19°C |
| June | 13°C | 18°C | 22°C |
| July | 16°C | 20°C | 25°C |
| August | 16°C | 20°C | 25°C |
| September | 13°C | 18°C | 22°C |
| October | 11°C | 15°C | 18°C |
| November | 8°C | 11°C | 14°C |
| December | 5°C | 9°C | 11°C |
Santiago de Compostela: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Santiago de Compostela (Spanish: Santiago de Compostela) sits inland in Galicia, a region with an Atlantic climate that keeps freshwater bodies relatively cool year-round. Lakes and reservoirs near the city typically register winter surface temperatures in the range of about 8–12 °C (46–54 °F), spring values warming to roughly 10–16 °C (50–61 °F), summer highs often reaching 18–22 °C (64–72 °F) and occasionally touching 24 °C (75 °F) in particularly warm spells, and autumn cooling back toward 10–15 °C (50–59 °F). These temperatures reflect modest seasonal variation compared with more continental areas; shallow ponds may warm faster while deep reservoirs remain colder at depth.
Swimming opportunities around Santiago de Compostela depend on location, season and regulation. Coastal bathing is common across Galicia, but inland lakes and reservoirs are subject to local rules: some designated natural swimming or recreational areas permit bathing when water quality and safety are assured, while many supply reservoirs or protected sites prohibit swimming for health and infrastructure reasons. Even where allowed, the relatively cool summer temperatures mean swims are refreshing rather than tropical, and safety considerations such as sudden depth changes, lack of lifeguards and variable water quality should guide decisions. Always follow local signage and municipal guidance before entering the water.