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March is the dry season at its driest in Nosara, and the forum's version of that is physical: carry water, expect strong sun and low humidity, and expect dust, because the place gets extremely dusty and fine dirt gets into everything. March and April are also the hottest, most crowded and most expensive months, with North Americans escaping winter across December to March, and the surf running knee to head high over the same stretch. One March visitor's compensation was the bougainvillea, out everywhere in the first half of the month. The record: 33.9C days that feel like 39C, 25.4C nights, 5.1 precipitation days carrying 25.3mm and a 29.5C sea.

Tamarindo's forum consistently rates July as one of the better rainy-season months - genuinely the driest stretch of the wet season here, with sunny mornings, clouding over by early afternoon, and a shower or thunderstorm that clears out again rather than lingering. Locals reportedly call this the 'little summer of San Juan,' a real break within the rainy season that feels more like a dry-season week. Daytime temperatures stay in the high 80s F, and forum regulars were clear this counts as a genuinely good month to visit, not a compromise pick.

Forum posters describe January as dry and beautiful, squarely inside Guanacaste's dry season - daytime highs commonly in the low 30sC with bright sun essentially every day, evenings cooling to a comfortable high-20sC. The landscape stays green early in the dry season, though posters note the strong 'December winds' (part of the broader Papagayo/Guanacaste wind pattern) can already be drying things out fast. Beaches generally aren't too windy through most of January, though the very start of the month - the wet-to-dry season transition - can see a stronger, gustier stretch. Overall, posters consistently rate January among the most reliable months here for classic sunny beach weather.