Backwash surfForecast / Golfo Dulce / 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
Backwash surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Backwash sea temperature is
29.1° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Backwash this week:

The surf forecast for Backwash over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Dec 30) at 9PM. The primary swell is predicted to be 0.4m and 13s period with a secondary swell of 0.4m and 7s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Backwash in the next 12 days are 1.0m 13s and forecast to arrive on Monday (Jan 05) at 6PM. 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 11s period and expected on Thursday (Jan 01) at 3PM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Tue 30th Dec)1.5ft (0.4m) 13s
Best Surf 9AM (Sun 4th Jan)2.5ft (0.8m) 16s
Most Powerful 6PM (Mon 5th Jan)3.5ft (1.0m) 13s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 14mm), heaviest on Thu night. Warm (max 28°C on Tue afternoon, min 24°C on Tue night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 30mm), heaviest during Fri night. Warm (max 28°C on Sat afternoon, min 24°C on Fri 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
1
1
1
0
1
1
1
1
1
0
1
2
0
2
2
1
2
Swell
Height Map
Wave Height (m) & direction (?)
0.3
S
0.4
S
0.4
SSW
0.7
S
0.7
S
0.7
S
0.5
S
0.6
S
0.7
S
0.5
S
0.5
S
0.4
SSW
0.4
SSW
0.4
SSW
0.5
SSW
0.8
SSW
0.7
SSW
0.9
SSW
0.8
SSW
0.9
SSW
0.8
SSW
Period(s) (?)151213131212121111111110121816161515141413
Wave
Graph
(?)Metric surfscale
Energy kJ (?)384458166141141698811961593552123149288196305229261195
Wind
(km/h)
5
ENE
15
SW
5
N
0
NE
10
WSW
5
NNE
0
E
15
SSW
5
NE
0
SE
10
WSW
5
NNW
5
ENE
10
SW
5
NNE
5
E
10
SSW
5
N
5
NNE
15
SW
5
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glasscrosscross-
off
glasscross-
off
glassglasscrossglassglasscross-
off
glassglasscrossglassglasscrossglassglasscrossglass
High Tide
/ height (m)
10:29AM
2.37
10:53PM
2.79
11:39AM
2.45
11:58PM
2.87
12:44PM
2.59
1:00AM
2.97
1:43PM
2.75
1:57AM
3.07
2:38PM
2.90
2:51AM
3.14
3:30PM
3.02
3:42AM
3.15
4:19PM
3.09
Low Tide
/ height (m)
4:29PM
0.73
5:27AM
0.50
5:38PM
0.66
6:30AM
0.35
6:43PM
0.55
7:28AM
0.19
7:43PM
0.42
8:22AM
0.06
8:40PM
0.32
9:13AM
-0.02
9:33PM
0.26
10:01AM
-0.04
10:23PM
0.26
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Saturday
03
Sunday
04
Monday
05
Sunrise5:46--5:46--5:47--5:47--5:48--5:48--5:48--
Sunset-5:23--5:24--5:24--5:25--5:25--5:27--5:28-
clear
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
Rain (mm)
-14-12-151312128111129
Temp. °C272826272826272826272725272825272825272826
Feels °C (?)303030303130303030302929303129293129303029
  • Map Icons:
  • Break
  • 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 Backwash Surf forecast

The above surf forecast table for Backwash provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Backwash can be found by selecting the local surf guide option on the grey menu. Our Backwash 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 (Backwash) 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 Backwash 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 Dulce? If you are looking for accommodation near Backwash, camping, hotels and holiday cottages in Golfo Dulce, consider staying in Golfito which is 28 km (17 miles) away. Other places in and around Golfo Dulce where you can find information about places to rent, and car hire include Puerto Armuelles which is 48 km (30 miles) away, La Concepcion, Pedregal and David.

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