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Chiang Rai Climate Guide
Thailand
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Maximum Daytime Temperature (°C)
Minimum Night-time Temperature (°C)
27
27 °C (81°F) Maximum Daytime Temperature in January
31
31 °C (88°F) Maximum Daytime Temperature in February
33
33 °C (91°F) Maximum Daytime Temperature in March
35
35 °C (95°F) Maximum Daytime Temperature in April
33
33 °C (91°F) Maximum Daytime Temperature in May
31
31 °C (88°F) Maximum Daytime Temperature in June
31
31 °C (88°F) Maximum Daytime Temperature in July
30
30 °C (86°F) Maximum Daytime Temperature in August
30
30 °C (86°F) Maximum Daytime Temperature in September
29
29 °C (84°F) Maximum Daytime Temperature in October
28
28 °C (82°F) Maximum Daytime Temperature in November
26
26 °C (79°F) Maximum Daytime Temperature in December
J F M A M J J A S O N D
12
12 °C (54°F) Minimum Night-time Temperature in January
13
13 °C (55°F) Minimum Night-time Temperature in February
16
16 °C (61°F) Minimum Night-time Temperature in March
20
20 °C (68°F) Minimum Night-time Temperature in April
22
22 °C (72°F) Minimum Night-time Temperature in May
23
23 °C (73°F) Minimum Night-time Temperature in June
23
23 °C (73°F) Minimum Night-time Temperature in July
22
22 °C (72°F) Minimum Night-time Temperature in August
22
22 °C (72°F) Minimum Night-time Temperature in September
20
20 °C (68°F) Minimum Night-time Temperature in October
17
17 °C (63°F) Minimum Night-time Temperature in November
12
12 °C (54°F) Minimum Night-time Temperature in December
J F M A M J J A S O N D
Hours of Sunshine
Hours of Daylight
8
8 Hours of Sunshine (76% of Daylight Hours) in January
9
9 Hours of Sunshine (80% of Daylight Hours) in February
8
8 Hours of Sunshine (68% of Daylight Hours) in March
8
8 Hours of Sunshine (67% of Daylight Hours) in April
7
7 Hours of Sunshine (55% of Daylight Hours) in May
5
5 Hours of Sunshine (39% of Daylight Hours) in June
5
5 Hours of Sunshine (34% of Daylight Hours) in July
5
5 Hours of Sunshine (37% of Daylight Hours) in August
6
6 Hours of Sunshine (46% of Daylight Hours) in September
7
7 Hours of Sunshine (56% of Daylight Hours) in October
7
7 Hours of Sunshine (62% of Daylight Hours) in November
7
7 Hours of Sunshine (68% of Daylight Hours) in December
J F M A M J J A S O N D
11
11 Hours of Daylight in January
12
12 Hours of Daylight in February
12
12 Hours of Daylight in March
13
13 Hours of Daylight in April
13
13 Hours of Daylight in May
13
13 Hours of Daylight in June
13
13 Hours of Daylight in July
13
13 Hours of Daylight in August
12
12 Hours of Daylight in September
12
12 Hours of Daylight in October
11
11 Hours of Daylight in November
11
11 Hours of Daylight in December
J F M A M J J A S O N D
Days with some Rain
Monthly Rainfall (mm)
2
2 Days with some Rain in January
2
2 Days with some Rain in February
3
3 Days with some Rain in March
10
10 Days with some Rain in April
17
17 Days with some Rain in May
19
19 Days with some Rain in June
22
22 Days with some Rain in July
24
24 Days with some Rain in August
18
18 Days with some Rain in September
12
12 Days with some Rain in October
6
6 Days with some Rain in November
3
3 Days with some Rain in December
J F M A M J J A S O N D
14
14 mm (0.6 inches) Monthly Rainfall in January
8
8 mm (0.3 inches) Monthly Rainfall in February
21
21 mm (0.8 inches) Monthly Rainfall in March
81
81 mm (3.2 inches) Monthly Rainfall in April
202
202 mm (8.0 inches) Monthly Rainfall in May
216
216 mm (8.5 inches) Monthly Rainfall in June
295
295 mm (11.6 inches) Monthly Rainfall in July
386
386 mm (15.2 inches) Monthly Rainfall in August
258
258 mm (10.2 inches) Monthly Rainfall in September
135
135 mm (5.3 inches) Monthly Rainfall in October
55
55 mm (2.2 inches) Monthly Rainfall in November
23
23 mm (0.9 inches) Monthly Rainfall in December
J F M A M J J A S O N D
Heat & Humidity / Chance of Frost
UV Index (Maximum)
L
Low Heat & Humidity in January
M
Moderate Heat & Humidity in February
H
High Heat & Humidity in March
VH
Very High Heat & Humidity in April
VH
Very High Heat & Humidity in May
VH
Very High Heat & Humidity in June
H
High Heat & Humidity in July
H
High Heat & Humidity in August
H
High Heat & Humidity in September
H
High Heat & Humidity in October
M
Moderate Heat & Humidity in November
L
Low Heat & Humidity in December
J F M A M J J A S O N D
8
UV 8 (Very High) in January
10
UV 10 (Very High) in February
11
UV 11+ (Extreme) in March
11
UV 11+ (Extreme) in April
11
UV 11+ (Extreme) in May
11
UV 11+ (Extreme) in June
11
UV 11+ (Extreme) in July
11
UV 11+ (Extreme) in August
11
UV 11+ (Extreme) in September
10
UV 10 (Very High) in October
8
UV 8 (Very High) in November
7
UV 7 (High) in December
J F M A M J J A S O N D
Sea Temperature (°C)
Chiang Rai Climate Guide (Historical Weather Averages), Thailand
Elev: 400 m   Long: 099°49'E   Lat: 19°54'N
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