You can use the following basic syntax to add a title to a heatmap in seaborn:

import matplotlib.pyplotas plt
import seaborn as sns

#create heatmap
sns.heatmap(df)

#add title
plt.title('This is my title')

The following example shows how to use this syntax in practice.

Example: Add Title to Heatmap in Seaborn

Suppose we have the following pandas DataFrame that contains information about points scored by various basketball players during five consecutive years:

import pandas as pd

#create DataFrame
df = pd.DataFrame({'year': [1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5],
                   'player': ['A', 'A', 'A', 'A', 'A', 'B', 'B',
                              'B', 'B', 'B', 'C', 'C', 'C', 'C', 'C'],
                   'points': [8, 12, 14, 14, 15, 10, 15, 19, 29, 13,
                              10, 14, 22, 24, 25]})

#pivot DataFrame
df = df.pivot('player', 'year', 'points')

#view DataFrame
print(df)

year     1   2   3   4   5
player                    
A        8  12  14  14  15
B       10  15  19  29  13
C       10  14  22  24  25

If we use the heatmap() function to create a heatmap in seaborn, no title will be added to the heatmap by default:

import seaborn as sns

#create heatmap
sns.heatmap(df, linewidth=.3)

However, we can use the title() function from matplotlib to quickly add a title to the heatmap:

import matplotlib.pyplotas plt
import seaborn as sns

#create heatmap
sns.heatmap(df, linewidth=.3)

#add title to heatmap
plt.title('Points Scored by Players Each Year')

Also note that we can use the following arguments within the title() function to modify the appearance of the title:

• loc: Location of the title text
• color: Color of the title text
• size: Font size of the title text

The following code shows how to add a title that is left-aligned, has a red font color, and a font size of 14:

import matplotlib.pyplot as plt
import seaborn as sns

#create heatmap
sns.heatmap(df, linewidth=.3)

#add customized title to heatmap
plt.title('Points Scored by Players Each Year', loc='left', color='red', size=14)

The following tutorials explain how to perform other common operations in seaborn: