Here are two other ways to check if your body is dehydrated. Try this skin test. First, use two fingers to grab a roll of skin on the back of your hand (between where your watch sits and where your fingers start), advises Higgins. Pull the skin up about Â½ to one centimeter high and then let the skin go.
October is our wettest month, and Iceland gets an average low of 37Â°F (about 3Â°C) and highs of 45Â°F (7Â°C). Expect lots of rain, usually drizzle. The average amount of rain is 4 to 5 inches, or 101-127 mm. But as always, the rain amount depends on which part of Iceland you are visiting.
October weather is usually pretty good even that late in the month. Average daytime temperatures will be in the 20 - 22C range, at night 14 - 16C. Ok there might be some rain but not endless grey days, normally short, sharp showers.