Many of these summability methods easily assign to 1 â 2 + 3 â 4 + ... a sum of 1â4 after all. Cesaro cesÃ ro summation is one of the few methods that do not sum â 1 + 2 â 3 + ... 4
However, despite this fine climate, many people prefer to visit Tallinn during April or May, when the fresh, spring weather is especially enticing. April features average daytime temperatures of 9Â°C / 48Â°F, with highs of more than 15Â°C / 59Â°F when May arrives.
In the inland, storm winds (more than 15 m/s) are rare, occurring only a few times a year, while on the coast and islands of the open seas the frequency of storm winds reaches 30â45 days/year. Estonia is located in a region of humid climate, where the amount of precipitation exceeds the total evaporation. The annual average of the relative air humidity is 80â83%. It is higher in winter and at its lowest in May, being 70% on average. The annual average precipitation varies between 550 and 800 mm.