The best time to go to Arenal is during the dry season, which runs from December to April.During these months, you'll experience less rainfall and plenty of sunshine, making it ideal for outdoor activities like hiking, zip-lining, and exploring the Arenal Volcano National Park. The trails are typically dry and easy to navigate, and the views of the volcano are often unobstructed by clouds. This period is particularly good for families as the weather is consistently pleasant for enjoying all the attractions.The shoulder months of May, June, and November can also be a good option for travellers looking for a balance of good weather and fewer crowds. While there might be occasional afternoon showers, mornings are usually clear, and you can often find better value on accommodation and tours. This period is great for couples who appreciate a slightly more relaxed pace and don't mind a bit of rain.