I'm planning to go to Costa Rica and Panama in late July. I've been told its rainy season down there at that time. How bad is it? Tropical rainfall non-stop for weeks? If it does rain for weeks, is there stuff to see, ie if it rains does it mean the whole trip is blown? How bad are the roads? Thanks for any info!
In Nicaragua, north of Costa Rica, it rains in July. This is no non-stop raining, but merely a heavy shower every day or every other day. Something to take into account, but not to hinder you from enjoying the country. It probably is the same in Costa Rica, although it normally rains a bit more. I'm not sure of Panama. The roads in Nicaragua get affected, but the main roads are good and you'll easily get around, so I guess it's the same in the other countries too.
I've been to Costa Rica twice, but only in the winter. I had a friend that went in July, and I remember candidly his comment "Don't wear cotton!" Apparrantly the humidity and rain make it very hard to dry your clothes (I can attest as I ruined a good pair of shoes because they didn't get dried out) So bring quick drying materials.
I paid extra for a hotel room on the west coast just so i could use the air conditioning unit to dry my clothes. This was early Dec, and the end of the rainy season. The roads are more dangerous during this time, but I managed fine. Don't worry so much about it, as travelnica said, it's not non-stop. Besides, it's warm rain.
My favorite places were Mt. Arenal, Puerto Viejo, the area north of Montezuma. Montezuma is commonly referred to as Gringolandia because of the frat-townness of it. Not my favorite, but the area north of there (including the natural reserve) was so worth the trip. And don't forget to try the beer Imperial!
I'm going in less than two weeks so I'll let you know when I get back. What part of the country are you visiting?