You could maybe try something from nicaragua found here: http://apps1.eere.energy.gov/buildings/energyplus/cfm/weather_data2.cfm/region=4_north_and_central_america_wmo_region_4
For more lists of weather you may want to check here, though some require purchase: http://www.gard.com/weather/index.htm and remember, you can edit a .tmy3 file by downloading, renaming the extension to .csv and then editing in excel!