Climate - Tallinn (Estonia)

The climate of Tallinn is Baltic, that is, moderately continental, with cold winters, during which the average temperature is a few degrees below freezing, and mild to pleasantly warm summers.
The city is the capital of Estonia and is located in the north of the country, on the coast of the Gulf of Finland.
In winter, the Gulf of Finland can freeze.
Given the latitude (59°26'N), the white nights, in which the sun sets but it does not get completely dark even at midnight, occur from May 14 to July 29. In winter, snowfalls are quite frequent, though generally not abundant. Cold spells from Russia, which were once more frequent, can be intense. The cold record is -32 °C (-25.5 °F), recorded in December 1978.

The average temperature of the coldest month (February) is of -3.7 °C (25.3 °F), that of the warmest month (July) is of 17.7 °C (63.9 °F). Here are the average temperatures.
Precipitation amounts to 695 millimeters (27.4 inches) per year: so, it is at an intermediate level. It ranges from 35 mm (1.4 in) in the driest months (February, March, April) to 85 mm (3.3 in) in the wettest one (August). Here is the average precipitation.
The sea temperature ranges from 0.5 °C (0.5 °F) in February to 17.5 °C (17.5 °F) in August. Here are the average sea temperatures.
On average, there are around 1825 sunshine hours per year. Here are the average sunshine hours per day.

Tallinn - Weather by month

Based on the period 1991-2020
(January - February - March - April - May - June - July - August - September - October - November - December)

In January, the average temperature is of -3.3 °C (26 °F), with a minimum of -5.7 °C (21.7 °F) and a maximum of -0.9 °C (30.3 °F).
On the coldest nights of the month, the temperature usually drops to around -17.5 °C (0.5 °F). However, in January 2003, it dropped to -29.4 °C (-20.9 °F).
On the warmest days of the month, the temperature usually reaches around 5 °C (40.5 °F). However, in January 2007, it reached 9.2 °C (48.6 °F).
Precipitation amounts to 55 mm (2.2 in), distributed over 13 days.
On average, there are 25 hours of sunshine per month, i.e. 1 hours per day.
The average sea temperature is of 2 °C (35.5 °F).

In February, the coldest month of the year, the average temperature is of -3.7 °C (25 °F), with a minimum of -6.3 °C (20.6 °F) and a maximum of -1.1 °C (30 °F).
On the coldest nights of the month, the temperature usually drops to around -16.5 °C (2.5 °F). However, in February 2012, it dropped to -27.3 °C (-17.1 °F).
On the warmest days of the month, the temperature usually reaches around 4.5 °C (40.5 °F). However, in February 2019, it reached 8.7 °C (47.7 °F).
Precipitation amounts to 35 mm (1.4 in), distributed over 9 days.
On average, there are 55 hours of sunshine per month, i.e. 2 hours per day.
The average sea temperature is of 0.5 °C (33.5 °F).

In March, the average temperature is of -0.6 °C (31 °F), with a minimum of -3.8 °C (25.1 °F) and a maximum of 2.7 °C (36.9 °F).
On the coldest nights of the month, the temperature usually drops to around -12.5 °C (9 °F). However, in March 2013, it dropped to -21.2 °C (-6.2 °F).
On the warmest days of the month, the temperature usually reaches around 10 °C (50 °F). However, in March 2007, it reached 15.9 °C (60.6 °F).
Precipitation amounts to 35 mm (1.4 in), distributed over 7 days.
On average, there are 130 hours of sunshine per month, i.e. 4 hours per day.
The average sea temperature is of 1 °C (33.5 °F).

In April, the average temperature is of 5.1 °C (41 °F), with a minimum of 0.7 °C (33.3 °F) and a maximum of 9.5 °C (49.1 °F).
On the coldest nights of the month, the temperature usually drops to around -5.5 °C (22.5 °F). However, in April 1998, it dropped to -12 °C (10.4 °F).
On the warmest days of the month, the temperature usually reaches around 19.5 °C (67 °F). However, in April 2000, it reached 27.2 °C (81 °F).
Precipitation amounts to 35 mm (1.4 in), distributed over 10 days.
On average, there are 205 hours of sunshine per month, i.e. 7 hours per day.
The average sea temperature is of 2 °C (36 °F).

In May, the average temperature is of 10.3 °C (51 °F), with a minimum of 5.2 °C (41.4 °F) and a maximum of 15.4 °C (59.8 °F).
On the coldest nights of the month, the temperature usually drops to around -1.5 °C (29.5 °F). However, in May 1999, it dropped to -5 °C (23 °F).
On the warmest days of the month, the temperature usually reaches around 25 °C (77 °F). However, in May 2014, it reached 31.4 °C (88.5 °F).
Precipitation amounts to 40 mm (1.6 in), distributed over 7 days.
On average, there are 295 hours of sunshine per month, i.e. 9.5 hours per day.
The average sea temperature is of 5.5 °C (42 °F).

In June, the average temperature is of 14.4 °C (58 °F), with a minimum of 9.7 °C (49.5 °F) and a maximum of 19.1 °C (66.4 °F).
On the coldest nights of the month, the temperature usually drops to around 4 °C (39 °F). However, in June 2009, it dropped to 0 °C (32 °F).
On the warmest days of the month, the temperature usually reaches around 26 °C (79 °F). However, in June 2019, it reached 31.1 °C (88 °F).
Precipitation amounts to 65 mm (2.6 in), distributed over 10 days.
On average, there are 285 hours of sunshine per month, i.e. 9.5 hours per day.
The average sea temperature is of 11 °C (51.5 °F).

In July, the warmest month of the year, the average temperature is of 17.7 °C (64 °F), with a minimum of 13.2 °C (55.7 °F) and a maximum of 22.3 °C (72.1 °F).
On the coldest nights of the month, the temperature usually drops to around 8 °C (46.5 °F). However, in July 1996, it dropped to 4 °C (39.2 °F).
On the warmest days of the month, the temperature usually reaches around 29 °C (84 °F). However, in July 1994, it reached 34.3 °C (93.7 °F).
Precipitation amounts to 80 mm (3.1 in), distributed over 9 days.
On average, there are 305 hours of sunshine per month, i.e. 10 hours per day.
The average sea temperature is of 16 °C (61 °F).

In August, the average temperature is of 16.6 °C (62 °F), with a minimum of 12.3 °C (54.1 °F) and a maximum of 21 °C (69.8 °F).
On the coldest nights of the month, the temperature usually drops to around 6 °C (43 °F). However, in August 2010, it dropped to 3.2 °C (37.8 °F).
On the warmest days of the month, the temperature usually reaches around 27.5 °C (81.5 °F). However, in August 1992, it reached 34.2 °C (93.6 °F).
Precipitation amounts to 85 mm (3.3 in), distributed over 10 days.
On average, there are 240 hours of sunshine per month, i.e. 8 hours per day.
The average sea temperature is of 17.5 °C (63.5 °F).

In September, the average temperature is of 12.2 °C (54 °F), with a minimum of 8.4 °C (47 °F) and a maximum of 16 °C (60.8 °F).
On the coldest nights of the month, the temperature usually drops to around 1.5 °C (35 °F). However, in September 1993, it dropped to -4.1 °C (24.6 °F).
On the warmest days of the month, the temperature usually reaches around 22.5 °C (72.5 °F). However, in September 1992, it reached 28 °C (82.4 °F).
Precipitation amounts to 60 mm (2.4 in), distributed over 10 days.
On average, there are 150 hours of sunshine per month, i.e. 5 hours per day.
The average sea temperature is of 14.5 °C (58.5 °F).

In October, the average temperature is of 6.5 °C (44 °F), with a minimum of 3.6 °C (38.5 °F) and a maximum of 9.4 °C (48.9 °F).
On the coldest nights of the month, the temperature usually drops to around -4 °C (25 °F). However, in October 2002, it dropped to -10.5 °C (13.1 °F).
On the warmest days of the month, the temperature usually reaches around 15.5 °C (59.5 °F). However, in October 2000, it reached 20 °C (68 °F).
Precipitation amounts to 75 mm (3 in), distributed over 13 days.
On average, there are 85 hours of sunshine per month, i.e. 3 hours per day.
The average sea temperature is of 10.5 °C (51 °F).

In November, the average temperature is of 1.8 °C (35 °F), with a minimum of -0.3 °C (31.5 °F) and a maximum of 4 °C (39.1 °F).
On the coldest nights of the month, the temperature usually drops to around -8 °C (17.5 °F). However, in November 1993, it dropped to -18.8 °C (-1.8 °F).
On the warmest days of the month, the temperature usually reaches around 9.5 °C (49.5 °F). However, in November 2015, it reached 13.7 °C (56.7 °F).
Precipitation amounts to 65 mm (2.6 in), distributed over 12 days.
On average, there are 30 hours of sunshine per month, i.e. 1 hours per day.
The average sea temperature is of 7 °C (44.5 °F).

In December, the average temperature is of -1.0 °C (30 °F), with a minimum of -3.2 °C (26.3 °F) and a maximum of 1.2 °C (34.1 °F).
On the coldest nights of the month, the temperature usually drops to around -12.5 °C (9.5 °F). However, in December 2002, it dropped to -24.3 °C (-11.7 °F).
On the warmest days of the month, the temperature usually reaches around 6.5 °C (43.5 °F). However, in December 2015, it reached 11.6 °C (52.9 °F).
Precipitation amounts to 60 mm (2.4 in), distributed over 14 days.
On average, there are 20 hours of sunshine per month, i.e. 0.5 hours per day.
The average sea temperature is of 3.5 °C (38.5 °F).