Shivas seasonal overview
Best Surf Season (November - February)
The surf year at Shivas is dictated by the Indian monsoon. During the northeast monsoon, from roughly November through February, the wind machine flips to the offshore quadrant - NNE, NE, ENE and E - and this southwest-facing beach turns clean. Average swells remain modest at 2-3ft (0.5-1m), but they arrive with 8-11s of period and often from the preferred SSW, SW, WSW and W directions. This is the most consistent stretch for groomed, rippable waves, with ideal surf conditions around 57-61% of the time and almost no rainfall.
Fair Surf Season (March - May & September - October)
As the Northern Hemisphere continent warms, offshore winds weaken in March and give way to increasing W/NW cross-onshore flow by April and May. April still sees long-period 10.9s SSW-to-W swell, which can produce excellent sessions in the right window, but the percentage of clean days drops to 30%. September and October mark the retreat of the southwest monsoon: the ocean is still full of WSW-W energy and the period gets longer again, while offshore wind frequencies climb back toward respectability. These shoulder months offer inconsistent but worthwhile surf if you can pick the windows.
Low Surf Season (June - August)
The southwest monsoon turns Shivas into a big-wave machine with dirty, dangerous conditions. Average swell heights surge to 7-8ft (2.1-2.4m) and even larger, with the dominant swell direction very favorable (WSW/W), but the same monsoon low-pressure system drives strong W/SW winds directly onshore. Ideal surfing windows crash to only 3-8%, rainfall is torrential, and the break becomes a blown-out, brown-water mess. This is the season for watching, not surfing.