Cooling and heating degree days by country in Bulgaria, 1991
Cooling and heating degree days by country in 1991: 12 values, Annual average — 257.2 degree days. Official data — Eurostat.

1991 totals
- Annual average: 257.2 degree days
- Value at start of year: 548.79 degree days (1 January 1991)
- Value at end of year: 624.34 degree days (1 December 1991)
- Minimum and maximum: 6.96 … 624.34 degree days
- Number of observations: 12
- Source: Eurostat
All values for 1991
| Date | Value, degree days |
|---|---|
| 1 January 1991 | 548.79 |
| 1 February 1991 | 534.24 |
| 1 March 1991 | 388.78 |
| 1 April 1991 | 255.63 |
| 1 May 1991 | 133.56 |
| 1 June 1991 | 10.62 |
| 1 July 1991 | 6.96 |
| 1 August 1991 | 7.74 |
| 1 September 1991 | 27.06 |
| 1 October 1991 | 190.2 |
| 1 November 1991 | 358.48 |
| 1 December 1991 | 624.34 |
Full history and interactive chart
Complete series for Bulgaria — on the Cooling and heating degree days by country page.
Other years
- Cooling and heating degree days by country in 2011
- Cooling and heating degree days by country in 2012
- Cooling and heating degree days by country in 2013
- Cooling and heating degree days by country in 2014
- Cooling and heating degree days by country in 2015
- Cooling and heating degree days by country in 2016
- Cooling and heating degree days by country in 2017
- Cooling and heating degree days by country in 2018
- Cooling and heating degree days by country in 2019
- Cooling and heating degree days by country in 2020
- Cooling and heating degree days by country in 2021
- Cooling and heating degree days by country in 2022
- Cooling and heating degree days by country in 2023
- Cooling and heating degree days by country in 2024
- Cooling and heating degree days by country in 2025