The most detailed information about the water temperature in Half Moon Bay in Pacific Ocean (California, United States). 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 Half Moon Bay for a week.
Water temperature in Half Moon Bay right now
data updated 40 minutes ago54°F
yesterday: 55°F
a week ago: 54°F
Trend: slow drop
Today water temperature in Half Moon Bay is 54.9°F. In general, this water temperature is unacceptable for swimming. But hardened people can afford to be in such water for 5-10 minutes. In any case, the general weather is also important. So, the air temperature at the same time will reach 53°F.
Analysis and forecast
The water temperature today roughly corresponds to the average value on this day in recent years. Its value has rise over the last week, but has drop compared to 20 days ago. Exactly a year ago, on this day, the water temperature in this location was 59°F. Water temperature range in Half Moon Bay in April is from 50 to 60 degrees.
According to our forecast, in the coming days, the water temperature value in Half Moon Bay will slightly drop and in 10 days it will be 53°F.
Table of water temperature values in Half Moon Bay
| Day | Fact* | Average** | Forecast*** |
| Apr 16 | 12.5°C | 13.5°C | |
| Apr 17 | 12.5°C | 13.3°C | |
| Apr 18 | 12.4°C | 13.5°C | |
| Apr 19 | 12.9°C | 14.0°C | |
| Apr 20 | 12.8°C | 13.0°C | |
| Apr 21 | 13.3°C | 13.3°C | |
| Apr 22 | 12.8°C | 13.5°C | |
| Apr 23 | 12.7°C | 13.3°C | |
| Apr 24 | 13.3°C | 12.7°C | |
| Apr 25 | 13.5°C | 12.9°C | |
| Apr 26 | 12.8°C | 12.2°C | |
| Apr 27 | 13.8°C | 13.2°C | |
| Apr 28 | 13.5°C | 12.9°C | |
| Apr 29 | 13.0°C | 12.4°C | |
| Apr 30 | 12.8°C | 12.2°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 United States.
Annual graph of average water temperature change in Half Moon Bay
Water temperature in Half Moon Bay by month
Half Moon Bay located in the northern hemisphere, at latitude 37 degrees. The water in this location never warms up to comfortable values. Average annual water temperature on the coast in Half Moon Bay is 56°F, by the seasons: in winter 54°F, in spring 55°F, in summer 57°F, in autumn 57°F. Minimum water temperature (49°F) in Half Moon Bay it happens in January, maximum (60°F) in July.
You can find out detailed data on how the water temperature in Half Moon Bay changes in each specific month:
Half Moon Bay: general information and map
Neighboring cities and resorts
| City | Water* | Distance** |
| Miramar | 54°C  | 4km |
| El Granada | 55°C | 6km |
| Moss Beach | 55°C | 10km |
| Montara | 54°C | 12km |
| Burlingame | 55°C | 14km |
| San Mateo | 55°C | 16km |
| San Gregorio | 54°C | 16km |
| Redwood City | 54°C | 17km |
| Pacifica | 55°C | 17km |
| Pescadero | 53°C | 23km |
| Daly City | 55°C | 25km |
| Palo Alto | 54°C | 29km |
** Straight line distance in kilometers
The warmest water today in United States recorded in Key West, its value is 78°F. Lowest - in Kotzebue, there water temperature now 28°F. Average water temperature in the country today - 57°F.
Water temperature data in Half Moon Bay 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 8 kilometers. This is Half Moon Bay (HAF) airport. We have no information as to whether it is valid and what flights it receives or sends.
Half Moon Bay: weather forecast
The weather forecast is shown in local time in Half Moon Bay
20km/hhumidity: 79%, clouds: 90%
19km/hhumidity: 76%, clouds: 95%
21km/hhumidity: 72%, clouds: 89%
22km/hhumidity: 70%, clouds: 56%
21km/hhumidity: 71%, clouds: 41%
18km/hhumidity: 80%, clouds: 80%
16km/hhumidity: 82%, clouds: 81%
14km/hhumidity: 80%, clouds: 100%
14km/hhumidity: 77%, clouds: 100%
14km/hhumidity: 74%, clouds: 96%
14km/hhumidity: 69%, clouds: 88%
17km/hhumidity: 67%, clouds: 51%
17km/hhumidity: 71%, clouds: 48%
8km/hhumidity: 82%, clouds: 95%
5km/hhumidity: 88%, clouds: 85%
12km/hhumidity: 87%, clouds: 99%
7km/hhumidity: 86%, clouds: 83%
13km/hhumidity: 84%, clouds: 86%
17km/hhumidity: 78%, clouds: 93%
14km/hhumidity: 77%, clouds: 100%
10km/hhumidity: 87%, clouds: 100%
9km/hhumidity: 93%, clouds: 97%
5km/hhumidity: 89%, clouds: 99%
8km/hhumidity: 97%, clouds: 100%
15km/hhumidity: 99%, clouds: 100%
21km/hhumidity: 93%, clouds: 100%
28km/hhumidity: 78%, clouds: 90%
27km/hhumidity: 76%, clouds: 60%
32km/hhumidity: 77%, clouds: 49%
28km/hhumidity: 87%, clouds: 38%
29km/hhumidity: 87%, clouds: 33%
24km/hhumidity: 87%, clouds: 61%
16km/hhumidity: 87%, clouds: 62%
15km/hhumidity: 82%, clouds: 43%
18km/hhumidity: 73%, clouds: 41%
24km/hhumidity: 70%, clouds: 20%
27km/hhumidity: 64%, clouds: 20%
21km/hhumidity: 81%, clouds: 17%
16km/hhumidity: 86%, clouds: 9%
