Avg High
Bangkok in April
Avg Low
Rain
Daylight
12h
What to expect
Bangkok is in mid-spring during April, a shoulder-season stretch where conditions can nudge warmer or cooler week to week. Midday heat can feel intense, and a gentle drop-off once the sun goes down. Conditions tend to feel steady, which makes planning simple. You get a comfortable daylight window for day trips and sightseeing.
April in context
How it compares to the rest of the year in Bangkok.
Hottest (avg)
#1 / 12
Wettest (avg)
#7 / 12
Daylight Hours
#5 / 12
Windiest (avg)
#2 / 12
Highest UV
#1 / 12
Most Humid
#8 / 12
Monthly climate breakdown
Temperature
- Daytime high
-
- Nighttime low
-
- Feels like (avg)
-
Sunshine
- Daylight hours
- 12.4 h
- UV index (max)
- 9
- Typical sun hours
- 06:04 - 18:30
Rain & Snow
- Total rain
-
- Rainy days
- 15 days
- Cloud cover (avg)
- 57%
Humidity & Wind
- Humidity (avg)
- 71%
- Wind (avg)
-
- Wind (max gusts)
-
Daily climate explorer
Day 15 selected for April. Typical high 34.0°C and low 26.8°C.
Typical disruptions in April
Based on 30 years of historical data, these are the disruption patterns most likely to affect plans in April.
Heat High impact
Hot feels-like days Measures: Hot feels-like days (>=32C). Observed about 100% of days (29.9 days/month) in April. Historical risk signal only, not a day-by-day forecast.
29.9 days / month
~100% of days
Why this matters
- Expected days 29.9 days / month
- Probability ~100% of days
- Intensity Up to ~42°C (P95)
Feels-like heat >=32C is possible on ~30 days. Midday activity often needs adjustment around shade, hydration, and indoor fallback options.
Heat High impact
Hot days Measures: Hot days (>=30C). Observed about 98% of days (29.3 days/month) in April. Historical risk signal only, not a day-by-day forecast.
29.3 days / month
~98% of days
Why this matters
- Expected days 29.3 days / month
- Probability ~98% of days
- Intensity Up to ~38°C (P95)
Hot days are possible on ~29 days. Midday activity often needs adjustment around shade, hydration, and indoor fallback options.
Humidity High impact
Muggy days Measures: Muggy days (dew point >=20C). Observed about 98% of days (29.3 days/month) in April. Historical risk signal only, not a day-by-day forecast.
29.3 days / month
~98% of days
Why this matters
- Expected days 29.3 days / month
- Probability ~98% of days
- Intensity Up to ~25°C (P95)
Muggy conditions are possible on ~29 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Heat High impact
Very hot feels-like Measures: Very hot feels-like days (>=35C). Observed about 97% of days (29.2 days/month) in April. Historical risk signal only, not a day-by-day forecast.
29.2 days / month
~97% of days
Why this matters
- Expected days 29.2 days / month
- Probability ~97% of days
- Intensity Up to ~42°C (P95)
Very hot feels-like conditions are possible on ~29 days. Midday activity often needs adjustment around shade, hydration, and indoor fallback options.
Heat High impact
Heat stress risk Measures: High heat stress days. Observed about 97% of days (29.2 days/month) in April. Historical risk signal only, not a day-by-day forecast.
29.2 days / month
~97% of days
Why this matters
- Expected days 29.2 days / month
- Probability ~97% of days
- Intensity Up to ~42°C (P95)
Heat stress is possible on ~29 days. Midday activity often needs adjustment around shade, hydration, and indoor fallback options.
Humidity High impact
Oppressive humidity Measures: Oppressive humidity days (dew point >=24C). Observed about 46% of days (13.9 days/month) in April. Historical risk signal only, not a day-by-day forecast.
13.9 days / month
~46% of days
Why this matters
- Expected days 13.9 days / month
- Probability ~46% of days
- Intensity Up to ~26°C (P95)
Oppressive humidity is possible on ~14 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Show all disruptions (20 more)
Heat High impact
Very hot days Measures: Very hot days (>=35C). Observed about 46% of days (13.9 days/month) in April. Historical risk signal only, not a day-by-day forecast.
13.9 days / month
~46% of days
Why this matters
- Expected days 13.9 days / month
- Probability ~46% of days
- Intensity Up to ~38°C (P95)
Very hot days are possible on ~14 days. Midday activity often needs adjustment around shade, hydration, and indoor fallback options.
Rain High impact
Washout risk Measures: Washout day risk. Observed about 13% of days (4.0 days/month) in April. Historical risk signal only, not a day-by-day forecast.
4.0 days / month
~13% of days
Why this matters
- Expected days 4.0 days / month
- Probability ~13% of days
- Intensity Up to ~27mm (P95)
Washout conditions are possible on ~4 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Rain High impact
Heavy rain days Measures: Heavy rain days (>=10mm). Observed about 7% of days (2.1 days/month) in April. Historical risk signal only, not a day-by-day forecast.
2.1 days / month
~7% of days
Why this matters
- Expected days 2.1 days / month
- Probability ~7% of days
- Intensity Up to ~33mm (P95)
Heavy rain is possible on ~2 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Rain High impact
Washout run Measures: Multi-day washout runs. Observed about 0.9 days/month in April. Historical risk signal only, not a day-by-day forecast.
0.9 days / month
Probability unavailable
Why this matters
- Expected days 0.9 days / month
- Probability —
- Intensity Up to ~26mm (P95)
Multi-day washout runs are possible on ~1 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Rain High impact
Very heavy rain Measures: Very heavy rain days (>=25mm). Observed about 1% of days (0.4 days/month) in April. Historical risk signal only, not a day-by-day forecast.
0.4 days / month
~1% of days
Why this matters
- Expected days 0.4 days / month
- Probability ~1% of days
- Intensity Up to ~54mm (P95)
Very heavy rain is possible on ~0 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Rain Moderate
Rain disruption Measures: Likely rain disruption days. Observed about 15% of days (4.4 days/month) in April. Historical risk signal only, not a day-by-day forecast.
4.4 days / month
~15% of days
Why this matters
- Expected days 4.4 days / month
- Probability ~15% of days
- Intensity Up to ~27mm (P95)
Rain disruption risk appears on ~4 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Heat Moderate
Heatwave run Measures: Heatwave runs (>=3 hot days). Observed about 1.2 days/month in April. Historical risk signal only, not a day-by-day forecast.
1.2 days / month
Probability unavailable
Why this matters
- Expected days 1.2 days / month
- Probability —
- Intensity Up to ~37°C (P95)
Heatwave runs are possible on ~1 days. Midday activity often needs adjustment around shade, hydration, and indoor fallback options.
Heat Moderate
Feels-like heatwave Measures: Feels-like heatwave runs (>=3 days). Observed about 1.0 days/month in April. Historical risk signal only, not a day-by-day forecast.
1.0 days / month
Probability unavailable
Why this matters
- Expected days 1.0 days / month
- Probability —
- Intensity Up to ~42°C (P95)
Feels-like heatwave runs are possible on ~1 days. Midday activity often needs adjustment around shade, hydration, and indoor fallback options.
Humidity Minor
Humid days Measures: Humid days (dew point >=18C). Observed about 100% of days (29.9 days/month) in April. Historical risk signal only, not a day-by-day forecast.
29.9 days / month
~100% of days
Why this matters
- Expected days 29.9 days / month
- Probability ~100% of days
- Intensity Up to ~25°C (P95)
Humid conditions are possible on ~30 days. Comfort and pace can drop quickly, so plan shorter outdoor blocks with air-conditioned backup stops.
Heat Minor
Warm nights Measures: Warm nights (min >=22C). Observed about 99% of days (29.8 days/month) in April. Historical risk signal only, not a day-by-day forecast.
29.8 days / month
~99% of days
Why this matters
- Expected days 29.8 days / month
- Probability ~99% of days
- Intensity Up to ~29°C (P95)
Warm nights are possible on ~30 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Heat Minor
Hot nights Measures: Hot nights (min >=25C). Observed about 89% of days (26.6 days/month) in April. Historical risk signal only, not a day-by-day forecast.
26.6 days / month
~89% of days
Why this matters
- Expected days 26.6 days / month
- Probability ~89% of days
- Intensity Up to ~29°C (P95)
Hot nights are possible on ~27 days. Midday activity often needs adjustment around shade, hydration, and indoor fallback options.
Rain Minor
Wet days Measures: Wet days (>=0.1mm). Observed about 63% of days (19.0 days/month) in April. Historical risk signal only, not a day-by-day forecast.
19.0 days / month
~63% of days
Why this matters
- Expected days 19.0 days / month
- Probability ~63% of days
- Intensity Up to ~16mm (P95)
Measurable rain is possible on ~19 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Cloud Minor
Cloudy days Measures: Cloudy days (cloud cover >=60%). Observed about 50% of days (14.9 days/month) in April. Historical risk signal only, not a day-by-day forecast.
14.9 days / month
~50% of days
Why this matters
- Expected days 14.9 days / month
- Probability ~50% of days
- Intensity Up to ~99% (P95)
Cloudy skies are possible on ~15 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Rain Minor
Rainy hours Measures: Rain-hours signal (>=3h rain). Observed about 41% of days (12.2 days/month) in April. Historical risk signal only, not a day-by-day forecast.
12.2 days / month
~41% of days
Why this matters
- Expected days 12.2 days / month
- Probability ~41% of days
- Intensity Up to ~17h (P95)
Several rainy hours are possible on ~12 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Cloud Minor
Mostly cloudy days Measures: Mostly cloudy days (cloud cover >=80%). Observed about 29% of days (8.6 days/month) in April. Historical risk signal only, not a day-by-day forecast.
8.6 days / month
~29% of days
Why this matters
- Expected days 8.6 days / month
- Probability ~29% of days
- Intensity Up to ~99% (P95)
Mostly cloudy skies are possible on ~9 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Rain Minor
Wet most of day Measures: Wet-most-of-day signal (>=6h rain). Observed about 23% of days (7.0 days/month) in April. Historical risk signal only, not a day-by-day forecast.
7.0 days / month
~23% of days
Why this matters
- Expected days 7.0 days / month
- Probability ~23% of days
- Intensity Up to ~20h (P95)
Wet-most-of-day conditions are possible on ~7 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Humidity Minor
Convective risk Measures: Convective storm risk proxy. Observed about 15% of days (4.4 days/month) in April. Historical risk signal only, not a day-by-day forecast.
4.4 days / month
~15% of days
Why this matters
- Expected days 4.4 days / month
- Probability ~15% of days
- Intensity Up to ~25°C (P95)
Convective risk signal appears on ~4 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Humidity Minor
High humidity Measures: High humidity days (RH >=80%). Observed about 15% of days (4.4 days/month) in April. Historical risk signal only, not a day-by-day forecast.
4.4 days / month
~15% of days
Why this matters
- Expected days 4.4 days / month
- Probability ~15% of days
- Intensity Up to ~88% (P95)
High humidity is possible on ~4 days. Comfort and pace can drop quickly, so plan shorter outdoor blocks with air-conditioned backup stops.
Cloud Minor
Overcast days Measures: Overcast days (cloud cover >=95%). Observed about 9% of days (2.7 days/month) in April. Historical risk signal only, not a day-by-day forecast.
2.7 days / month
~9% of days
Why this matters
- Expected days 2.7 days / month
- Probability ~9% of days
- Intensity Up to ~100% (P95)
Overcast skies are possible on ~3 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Wind Minor
Gusty days Measures: Gusty days (>=40 km/h). Observed about 6% of days (1.9 days/month) in April. Historical risk signal only, not a day-by-day forecast.
1.9 days / month
~6% of days
Why this matters
- Expected days 1.9 days / month
- Probability ~6% of days
- Intensity Up to ~47km/h (P95)
Gusty conditions are possible on ~2 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Frequently asked questions
Is April a good time to visit Bangkok?
Typical April days in Bangkok reach highs of 34°C (93°F) with nights around 27°C (81°F). It usually feels very hot by day and warm after dark. Overall, April sits in the middle of the Bangkok climate range.
What are temperatures like in April?
Daytime temperatures in April typically peak near 34°C (93°F), while nights drop to around 27°C (81°F). Expect very hot afternoons and warm evenings.
How much does it rain in April?
Rainfall in April averages 76 mm (3.0 in) across roughly 15 days. Overall it is a very wet time of year, so a light rain jacket and waterproof shoes are very handy.
How many hours of daylight are there in April?
You can expect about 12 hours of daylight in April. Sunrise is typically around 06:04 and sunset near 18:30. Daylight is fairly typical, with enough time for sightseeing.
How strong is the sun in April?
UV levels frequently reach very high levels (around 9), so strong sun protection is essential, especially around midday.
Is it windy in April?
In April, average wind speeds are around 10 km/h (6 mph), with gusts on the windiest days reaching about 39 km/h (24 mph). On the ground, it is a gentle to moderate breeze is common, but stronger winds are not frequent.