Dillon Beach — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Dillon Beach (California, United States). 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 Dillon Beach help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Dillon Beach in the Pacific Ocean today is 15°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear.
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 Dillon Beach 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 Dillon Beach will be 14.1°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 |
|---|---|---|---|
| JUL 17 | 12.8°C | 12.5°C | |
| JUL 18 | 12.5°C | 12.5°C | |
| JUL 19 | 12.7°C | 12.3°C | |
| JUL 20 | 12.4°C | 12.0°C | |
| JUL 21 | 11.9°C | 12.3°C | |
| JUL 22 | 12.3°C | 12.3°C | |
| JUL 23 | 12.4°C | 13.5°C | |
| JUL 24 | 14.3°C | 13.5°C | |
| JUL 25 | 14.6°C | 13.5°C | 14.6°C |
| JUL 26 | 12.3°C | 14.5°C | |
| JUL 27 | 12.0°C | 14.5°C | |
| JUL 28 | 13.3°C | 14.4°C | |
| JUL 29 | 13.5°C | 14.3°C | |
| JUL 30 | 13.5°C | 14.3°C | |
| JUL 31 | 13.8°C | 14.2°C | |
| AUG 1 | 12.5°C | 14.1°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
Dillon Beach sits on the northern California coast at the mouth of Tomales Bay and is exposed to cool Pacific waters driven by the California Current. As a result, sea temperatures remain relatively low throughout the year. Typical seasonal surface temperatures range from about 9–12 °C in winter, gradually rising to roughly 10–13 °C in spring. The warmest months usually bring averages around 12–16 °C in summer, with early autumn often holding water in the 11–15 °C range. The more sheltered waters inside Tomales Bay can be a degree or two warmer than the open ocean at times, but overall swimmers should expect brisk conditions even on sunny days.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 10°C | 12°C | 15°C |
| February | 9°C | 11°C | 14°C |
| March | 8°C | 11°C | 14°C |
| April | 8°C | 11°C | 13°C |
| May | 9°C | 11°C | 15°C |
| June | 8°C | 12°C | 15°C |
| July | 9°C | 12°C | 16°C |
| August | 10°C | 13°C | 18°C |
| September | 11°C | 14°C | 16°C |
| October | 11°C | 14°C | 17°C |
| November | 10°C | 12°C | 16°C |
| December | 10°C | 12°C | 15°C |
* Click on a month to view detailed water temperature data.
Dillon Beach: Weather Forecast
July 26
July 27
July 28
July 29
Location, Beaches & Local Information
Nearby Beaches & Facilities
Dillon Beach
Estero De San Antonio Beach
Duck Beach
Lawson's Landing Beach
North Blue Gum Beach
Avalis Beach
Jacks Beach
Estero Americano Beach
Driftwood Beach
Swimming Conditions
Swimming at Dillon Beach is possible but different from typical warm-water beach holidays. The broad sandy shore and gentle slopes make paddling and short swims achievable, yet cold water, wind-driven waves, and variable currents mean extended exposure can be uncomfortable without a wetsuit. For a milder experience, many visitors opt to swim or float closer to the bay side where conditions are calmer and less wave-driven, or take kayaks to explore more protected coves. Beachgoers should pay attention to tidal changes, local signage, and changing weather; hypothermia and strong surf are the main hazards rather than water depth. Those seeking a traditional beach swimming holiday may prefer warmer coastal locations, while visitors to Dillon Beach should plan for cooler water and bring appropriate gear if they intend to spend time in the sea.