Damas Rivermouth surfForecast / Golfo de Nicoya / Costa Rica

information circle12 Day Weather and Surf, issued 11 am Tuesday 30 Dec 2025 CST
Forecast update in hr  min  s Forecast update imminent
Damas Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Damas Rivermouth sea temperature is
28.9° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Damas Rivermouth this week:

The surf forecast for Damas Rivermouth over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Dec 30) at 6PM. The primary swell is predicted to be 0.4m and 12s period with a secondary swell of 0.5m and 8s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Damas Rivermouth in the next 12 days are 0.8m 15s and forecast to arrive on Monday (Jan 05) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 3s period and expected on Wednesday (Dec 31) at 6PM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Tue 30th Dec)1.5ft (0.4m) 12s
Best Surf 3AM (Sun 4th Jan)1.5ft (0.5m) 16s
Most Powerful12AM (Mon 5th Jan)2.5ft (0.8m) 15s

Table - best surf conditions forecast for Damas Rivermouth over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Some drizzle, heaviest during Thu night. Warm (max 28°C on Tue morning, min 24°C on Tue night). Wind will be generally light.

Days 3-6 Weather Summary Moderate rain (total 10mm), heaviest on Fri afternoon. Warm (max 28°C on Fri morning, min 23°C on Sun night). Wind will be generally light.

Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Saturday
03
Sunday
04
Monday
05
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
0
1
1
0
1
1
0
1
1
0
1
1
0
1
2
1
2
2
1
1
Swell
Height Map
Wave Height (m) & direction (?)
0.3
S
0.3
S
0.4
S
0.6
S
0.7
S
0.7
S
0.5
S
0.5
S
0.6
S
0.6
S
0.6
S
0.6
S
0.4
SSW
0.3
SSW
0.4
SSW
0.6
SSW
0.5
SSW
0.8
SSW
0.7
SSW
0.7
SSW
0.7
SSW
Period(s) (?)151413111212121111111110121816161515141413
Wave
Graph
(?)Metric surfscale
Energy kJ (?)38375586141141726288888678516190201128242178163151
Wind
(km/h)
5
SSW
10
S
5
NNE
5
SW
5
SSW
10
NE
5
SSW
10
SSW
5
N
0
SSW
10
S
5
NNE
0
SSW
10
S
5
NNE
0
SSE
10
S
5
NNE
5
S
10
SSW
5
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glassoncross-
off
glassoncross-
off
glassonglassglassoncross-
off
glassoncross-
off
glassoncross-
off
glassonglass
High Tide
/ height (m)
10:25AM
2.12
10:51PM
2.54
11:34AM
2.19
11:56PM
2.62
12:40PM
2.31
12:58AM
2.71
1:40PM
2.45
1:55AM
2.80
2:35PM
2.59
2:49AM
2.85
3:27PM
2.70
3:41AM
2.86
4:17PM
2.76
Low Tide
/ height (m)
4:25PM
0.63
5:25AM
0.45
5:33PM
0.57
6:28AM
0.32
6:39PM
0.47
7:27AM
0.18
7:40PM
0.36
8:21AM
0.06
8:37PM
0.27
9:12AM
-0.02
9:30PM
0.22
10:01AM
-0.04
10:22PM
0.22
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Saturday
03
Sunday
04
Monday
05
Sunrise5:52--5:52--5:52--5:52--5:54--5:54--5:54--
Sunset-5:27--5:27--5:28--5:28--5:29--5:29--5:30-
clear
clear
clear
clear
part cloud
clear
clear
part cloud
rain showers
clear
thunderstorm
thunderstorm
clear
thunderstorm
clear
clear
thunderstorm
rain showers
clear
part cloud
clear
Rain (mm)
--------1-21-3--31---
Temp. °C282826282826282826282725282725282725272726
Feels °C (?)303130303129303130303029302929303029303030
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Damas Rivermouth Surf forecast

The above surf forecast table for Damas Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Damas Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Damas Rivermouth surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Damas Rivermouth) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Damas Rivermouth may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Are you planning a holiday in Golfo de Nicoya? If you are looking for accommodation near Damas Rivermouth, camping, hotels and holiday cottages in Golfo de Nicoya, consider staying in Quepos which is 20 km (12 miles) away. Other places in and around Golfo de Nicoya where you can find information about places to rent, and car hire include Tejar which is 30 km (19 miles) away, San Rafael Abajo, Aserri and San Rafael Arriba.

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